diff --git a/assets/packages/expressions/em_javascript.js b/assets/packages/expressions/em_javascript.js
index 483c462dc5a..73581e3e290 100644
--- a/assets/packages/expressions/em_javascript.js
+++ b/assets/packages/expressions/em_javascript.js
@@ -393,12 +393,37 @@ function LEMsum()
     return result.toString();
 }
 
-function LEMintval(a)
+/**
+ * return interger value of mixedVar (near like PHP floatval)
+ * @param mixed mixedVar
+ * @return integer
+ * @see: https://locutus.io/php/var/intval
+ * original by: Kevin van Zonneveld (https://kvz.io)
+ * improved by: stensi
+ * adapated for LimeSurvey by Denis Chenu
+ *   example 1: intval('150.03LimeSurvey')
+ *   returns 1: 150
+ *   example 2: intval('LimeSurvey: 10')
+ *   returns 2: 0
+ *   example 3: intval('-50.1 + 8')
+ *   returns 3: -50
+ *   example 4: intval(1 > 0)
+ *   returns 4: 1
+ */
+function LEMintval(mixedVar)
 {
-    if (isNaN(a)) {
-        return NaN;
+    var type = typeof mixedVar
+    if (type === 'boolean') {
+        return +mixedVar;
+    } 
+    if (type === 'string') {
+        tmp = parseInt(mixedVar, 10)
+        return (isNaN(tmp) || !isFinite(tmp)) ? 0 : tmp;
+    }
+    if (type === 'number' && isFinite(mixedVar)) {
+        return mixedVar < 0 ? Math.ceil(mixedVar) : Math.floor(mixedVar);
     }
-    return Math.floor(+a);
+    return 0;
 }
 
 function LEMis_null(a)
@@ -500,17 +525,24 @@ function LEMconvert_value( fValueToReplace, iStrict, sTranslateFromList, sTransl
  * @return float
  * @see: https://locutus.io/php/floatval/
  * original by: Michael White (https://getsprink.com)
+ * updated for LimeSurvey by Denis Chenu
  *      note 1: The native parseFloat() method of JavaScript returns NaN
  *      note 1: when it encounters a string before an int or float value.
- *   example 1: floatval('150.03_page-section')
+ *   example 1: floatval('150.03LimeSurvey')
  *   returns 1: 150.03
- *   example 2: floatval('page: 3')
+ *   example 2: floatval('LimeSurvey: 10')
  *   returns 2: 0
- *   example 3: floatval('-50 + 8')
- *   returns 3: -50
+ *   example 3: floatval('-50.1 + 8')
+ *   returns 3: -50.1
+ *   example 4: floatval(1 > 0)
+ *   returns 4: 1
  */
 function LEMfloatval(mixedVar)
 {
+    var type = typeof mixedVar;
+    if (type === 'boolean') {
+        return +mixedVar
+    }
     return (parseFloat(mixedVar) || 0)
 }
 /**
diff --git a/tests/data/surveys/limesurvey_survey_15598_intval_floatval_jsphp_compare.lss b/tests/data/surveys/limesurvey_survey_15598_intval_floatval_jsphp_compare.lss
new file mode 100644
index 00000000000..4efa0da8e49
--- /dev/null
+++ b/tests/data/surveys/limesurvey_survey_15598_intval_floatval_jsphp_compare.lss
@@ -0,0 +1,1166 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document>
+ <LimeSurveyDocType>Survey</LimeSurveyDocType>
+ <DBVersion>424</DBVersion>
+ <languages>
+  <language>en</language>
+ </languages>
+ <groups>
+  <fields>
+   <fieldname>gid</fieldname>
+   <fieldname>sid</fieldname>
+   <fieldname>group_order</fieldname>
+   <fieldname>randomization_group</fieldname>
+   <fieldname>grelevance</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <gid><![CDATA[144]]></gid>
+    <sid><![CDATA[769299]]></sid>
+    <group_order><![CDATA[1]]></group_order>
+    <randomization_group/>
+    <grelevance><![CDATA[1]]></grelevance>
+   </row>
+   <row>
+    <gid><![CDATA[145]]></gid>
+    <sid><![CDATA[769299]]></sid>
+    <group_order><![CDATA[2]]></group_order>
+    <randomization_group/>
+    <grelevance/>
+   </row>
+  </rows>
+ </groups>
+ <group_l10ns>
+  <fields>
+   <fieldname>id</fieldname>
+   <fieldname>gid</fieldname>
+   <fieldname>group_name</fieldname>
+   <fieldname>description</fieldname>
+   <fieldname>language</fieldname>
+   <fieldname>sid</fieldname>
+   <fieldname>group_order</fieldname>
+   <fieldname>randomization_group</fieldname>
+   <fieldname>grelevance</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <id><![CDATA[200]]></id>
+    <gid><![CDATA[144]]></gid>
+    <group_name><![CDATA[My first survey page]]></group_name>
+    <language><![CDATA[en]]></language>
+    <sid><![CDATA[769299]]></sid>
+    <group_order><![CDATA[1]]></group_order>
+    <randomization_group/>
+    <grelevance><![CDATA[1]]></grelevance>
+   </row>
+   <row>
+    <id><![CDATA[201]]></id>
+    <gid><![CDATA[145]]></gid>
+    <group_name><![CDATA[2nd page]]></group_name>
+    <description/>
+    <language><![CDATA[en]]></language>
+    <sid><![CDATA[769299]]></sid>
+    <group_order><![CDATA[2]]></group_order>
+    <randomization_group/>
+    <grelevance/>
+   </row>
+  </rows>
+ </group_l10ns>
+ <questions>
+  <fields>
+   <fieldname>qid</fieldname>
+   <fieldname>parent_qid</fieldname>
+   <fieldname>sid</fieldname>
+   <fieldname>gid</fieldname>
+   <fieldname>type</fieldname>
+   <fieldname>title</fieldname>
+   <fieldname>preg</fieldname>
+   <fieldname>other</fieldname>
+   <fieldname>mandatory</fieldname>
+   <fieldname>question_order</fieldname>
+   <fieldname>scale_id</fieldname>
+   <fieldname>same_default</fieldname>
+   <fieldname>relevance</fieldname>
+   <fieldname>modulename</fieldname>
+   <fieldname>encrypted</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <parent_qid><![CDATA[0]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[Q]]></type>
+    <title><![CDATA[MULTI]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[769299]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2768]]></qid>
+    <parent_qid><![CDATA[0]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[X]]></type>
+    <title><![CDATA[checkJs]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[769300]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2776]]></qid>
+    <parent_qid><![CDATA[0]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[145]]></gid>
+    <type><![CDATA[X]]></type>
+    <title><![CDATA[chekPHP]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[0]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+  </rows>
+ </questions>
+ <subquestions>
+  <fields>
+   <fieldname>qid</fieldname>
+   <fieldname>parent_qid</fieldname>
+   <fieldname>sid</fieldname>
+   <fieldname>gid</fieldname>
+   <fieldname>type</fieldname>
+   <fieldname>title</fieldname>
+   <fieldname>preg</fieldname>
+   <fieldname>other</fieldname>
+   <fieldname>mandatory</fieldname>
+   <fieldname>question_order</fieldname>
+   <fieldname>scale_id</fieldname>
+   <fieldname>same_default</fieldname>
+   <fieldname>relevance</fieldname>
+   <fieldname>modulename</fieldname>
+   <fieldname>encrypted</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <qid><![CDATA[2769]]></qid>
+    <parent_qid><![CDATA[2758]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[F]]></type>
+    <title><![CDATA[float]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[1]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2795]]></qid>
+    <parent_qid><![CDATA[2758]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[F]]></type>
+    <title><![CDATA[text]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[2]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2796]]></qid>
+    <parent_qid><![CDATA[2758]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[F]]></type>
+    <title><![CDATA[floattext]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[3]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2797]]></qid>
+    <parent_qid><![CDATA[2758]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[F]]></type>
+    <title><![CDATA[floatoperation]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[4]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2798]]></qid>
+    <parent_qid><![CDATA[2758]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[F]]></type>
+    <title><![CDATA[floatnegative]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[5]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[1]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2799]]></qid>
+    <parent_qid><![CDATA[2758]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[F]]></type>
+    <title><![CDATA[floatnegativeoperati]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[6]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance/>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+   <row>
+    <qid><![CDATA[2800]]></qid>
+    <parent_qid><![CDATA[2758]]></parent_qid>
+    <sid><![CDATA[769299]]></sid>
+    <gid><![CDATA[144]]></gid>
+    <type><![CDATA[F]]></type>
+    <title><![CDATA[hidden]]></title>
+    <preg/>
+    <other><![CDATA[N]]></other>
+    <mandatory><![CDATA[N]]></mandatory>
+    <question_order><![CDATA[7]]></question_order>
+    <scale_id><![CDATA[0]]></scale_id>
+    <same_default><![CDATA[0]]></same_default>
+    <relevance><![CDATA[is_empty(MULTI_float.NAOK)]]></relevance>
+    <modulename/>
+    <encrypted><![CDATA[N]]></encrypted>
+   </row>
+  </rows>
+ </subquestions>
+ <question_l10ns>
+  <fields>
+   <fieldname>id</fieldname>
+   <fieldname>qid</fieldname>
+   <fieldname>question</fieldname>
+   <fieldname>help</fieldname>
+   <fieldname>language</fieldname>
+   <fieldname>script</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <id><![CDATA[5584]]></id>
+    <qid><![CDATA[2758]]></qid>
+    <question><![CDATA[A first example question. Please answer this question:]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+    <script/>
+   </row>
+   <row>
+    <id><![CDATA[5594]]></id>
+    <qid><![CDATA[2768]]></qid>
+    <question><![CDATA[<dl>
+    <dt>intval float</dt>
+    <dd id='intval-float'>{intval(MULTI_float)}</dd>
+    <dt>floatval float</dt>
+    <dd id='floatval-float'>{floatval(MULTI_float)}</dd>
+    <dt>intval text</dt>
+    <dd id='intval-text'>{intval(MULTI_text)}</dd>
+    <dt>floatval text</dt>
+    <dd id='floatval-text'>{floatval(MULTI_text)}</dd>
+    <dt>intval floattext</dt>
+    <dd id='intval-floattext'>{intval(MULTI_floattext)}</dd>
+    <dt>floatval floattext</dt>
+    <dd id='floatval-floattext'>{floatval(MULTI_floattext)}</dd>
+    <dt>intval floatoperation</dt>
+    <dd id='intval-floatoperation'>{intval(MULTI_floatoperation)}</dd>
+    <dt>floatval floatoperation</dt>
+    <dd id='floatval-floatoperation'>{floatval(MULTI_floatoperation)}</dd>
+    <dt>intval floatnegative</dt>
+    <dd id='intval-floatnegative'>{intval(MULTI_floatnegative)}</dd>
+    <dt>floatval floatnegative</dt>
+    <dd id='floatval-floatnegative'>{floatval(MULTI_floatnegative)}</dd>
+    <dt>intval floatnegativeoperati</dt>
+    <dd id='intval-floatnegativeoperati'>{intval(MULTI_floatnegativeoperati)}</dd>
+    <dt>floatval floatnegativeoperati</dt>
+    <dd id='floatval-floatnegativeoperati'>{floatval(MULTI_floatnegativeoperati)}</dd>
+    <dt>intval hidden</dt>
+    <dd id='intval-hidden'>{intval(MULTI_hidden.NAOK)}</dd>
+    <dt>floatval hidden</dt>
+    <dd id='floatval-hidden'>{floatval(MULTI_hidden.NAOK)}</dd>
+    <dt>intval true</dt>
+    <dd id='intval-true'>{intval(!is_empty(MULTI_float))}</dd>
+    <dt>floatval true</dt>
+    <dd id='floatval-true'>{floatval(!is_empty(MULTI_float))}</dd>
+    <dt>intval false</dt>
+    <dd id='intval-false'>{intval(is_empty(MULTI_float))}</dd>
+    <dt>floatval false</dt>
+    <dd id='floatval-false'>{floatval(is_empty(MULTI_float))}</dd>
+</dl>]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+    <script/>
+   </row>
+   <row>
+    <id><![CDATA[5595]]></id>
+    <qid><![CDATA[2769]]></qid>
+    <question><![CDATA[Float ( 42.42)]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+   </row>
+   <row>
+    <id><![CDATA[5602]]></id>
+    <qid><![CDATA[2776]]></qid>
+    <question><![CDATA[<dl>
+    <dt>intval float</dt>
+    <dd id='intval-float'>{intval(MULTI_float)}</dd>
+    <dt>floatval float</dt>
+    <dd id='floatval-float'>{floatval(MULTI_float)}</dd>
+    <dt>intval text</dt>
+    <dd id='intval-text'>{intval(MULTI_text)}</dd>
+    <dt>floatval text</dt>
+    <dd id='floatval-text'>{floatval(MULTI_text)}</dd>
+    <dt>intval floattext</dt>
+    <dd id='intval-floattext'>{intval(MULTI_floattext)}</dd>
+    <dt>floatval floattext</dt>
+    <dd id='floatval-floattext'>{floatval(MULTI_floattext)}</dd>
+    <dt>intval floatoperation</dt>
+    <dd id='intval-floatoperation'>{intval(MULTI_floatoperation)}</dd>
+    <dt>floatval floatoperation</dt>
+    <dd id='floatval-floatoperation'>{floatval(MULTI_floatoperation)}</dd>
+    <dt>intval floatnegative</dt>
+    <dd id='intval-floatnegative'>{intval(MULTI_floatnegative)}</dd>
+    <dt>floatval floatnegative</dt>
+    <dd id='floatval-floatnegative'>{floatval(MULTI_floatnegative)}</dd>
+    <dt>intval floatnegativeoperati</dt>
+    <dd id='intval-floatnegativeoperati'>{intval(MULTI_floatnegativeoperati)}</dd>
+    <dt>floatval floatnegativeoperati</dt>
+    <dd id='floatval-floatnegativeoperati'>{floatval(MULTI_floatnegativeoperati)}</dd>
+    <dt>intval hidden</dt>
+    <dd id='intval-hidden'>{intval(MULTI_hidden.NAOK)}</dd>
+    <dt>floatval hidden</dt>
+    <dd id='floatval-hidden'>{floatval(MULTI_hidden.NAOK)}</dd>
+    <dt>intval true</dt>
+    <dd id='intval-true'>{intval(!is_empty(MULTI_float))}</dd>
+    <dt>floatval true</dt>
+    <dd id='floatval-true'>{floatval(!is_empty(MULTI_float))}</dd>
+    <dt>intval false</dt>
+    <dd id='intval-false'>{intval(is_empty(MULTI_float))}</dd>
+    <dt>floatval false</dt>
+    <dd id='floatval-false'>{floatval(is_empty(MULTI_float))}</dd>
+</dl>]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+    <script/>
+   </row>
+   <row>
+    <id><![CDATA[5621]]></id>
+    <qid><![CDATA[2795]]></qid>
+    <question><![CDATA[Text (LimeSurvey)]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+   </row>
+   <row>
+    <id><![CDATA[5622]]></id>
+    <qid><![CDATA[2796]]></qid>
+    <question><![CDATA[Float followed by text (42.42LimeSurvey)]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+   </row>
+   <row>
+    <id><![CDATA[5623]]></id>
+    <qid><![CDATA[2797]]></qid>
+    <question><![CDATA[Float followed by operation (+42.42 + 33)]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+   </row>
+   <row>
+    <id><![CDATA[5624]]></id>
+    <qid><![CDATA[2798]]></qid>
+    <question><![CDATA[Negative float : (-3.5)]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+   </row>
+   <row>
+    <id><![CDATA[5625]]></id>
+    <qid><![CDATA[2799]]></qid>
+    <question><![CDATA[Negative float with operation: (-3.5+33)]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+   </row>
+   <row>
+    <id><![CDATA[5626]]></id>
+    <qid><![CDATA[2800]]></qid>
+    <question><![CDATA[Not relevant]]></question>
+    <help/>
+    <language><![CDATA[en]]></language>
+   </row>
+  </rows>
+ </question_l10ns>
+ <question_attributes>
+  <fields>
+   <fieldname>qid</fieldname>
+   <fieldname>attribute</fieldname>
+   <fieldname>value</fieldname>
+   <fieldname>language</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[array_filter]]></attribute>
+    <value/>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[array_filter_exclude]]></attribute>
+    <value/>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[array_filter_style]]></attribute>
+    <value><![CDATA[0]]></value>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[cssclass]]></attribute>
+    <value/>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[display_rows]]></attribute>
+    <value/>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[em_validation_q]]></attribute>
+    <value/>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[em_validation_q_tip]]></attribute>
+    <value/>
+    <language><![CDATA[en]]></language>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[em_validation_sq]]></attribute>
+    <value/>
+   </row>
+   <row>
+    <qid><![CDATA[2758]]></qid>
+    <attribute><![CDATA[em_validation_sq_tip]]></attribute>
+    <value/>
+   </row>
+   <row>
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+  </rows>
+ </question_attributes>
+ <surveys>
+  <fields>
+   <fieldname>sid</fieldname>
+   <fieldname>gsid</fieldname>
+   <fieldname>admin</fieldname>
+   <fieldname>expires</fieldname>
+   <fieldname>startdate</fieldname>
+   <fieldname>adminemail</fieldname>
+   <fieldname>anonymized</fieldname>
+   <fieldname>faxto</fieldname>
+   <fieldname>format</fieldname>
+   <fieldname>savetimings</fieldname>
+   <fieldname>template</fieldname>
+   <fieldname>language</fieldname>
+   <fieldname>additional_languages</fieldname>
+   <fieldname>datestamp</fieldname>
+   <fieldname>usecookie</fieldname>
+   <fieldname>allowregister</fieldname>
+   <fieldname>allowsave</fieldname>
+   <fieldname>autonumber_start</fieldname>
+   <fieldname>autoredirect</fieldname>
+   <fieldname>allowprev</fieldname>
+   <fieldname>printanswers</fieldname>
+   <fieldname>ipaddr</fieldname>
+   <fieldname>refurl</fieldname>
+   <fieldname>showsurveypolicynotice</fieldname>
+   <fieldname>publicstatistics</fieldname>
+   <fieldname>publicgraphs</fieldname>
+   <fieldname>listpublic</fieldname>
+   <fieldname>htmlemail</fieldname>
+   <fieldname>sendconfirmation</fieldname>
+   <fieldname>tokenanswerspersistence</fieldname>
+   <fieldname>assessments</fieldname>
+   <fieldname>usecaptcha</fieldname>
+   <fieldname>usetokens</fieldname>
+   <fieldname>bounce_email</fieldname>
+   <fieldname>attributedescriptions</fieldname>
+   <fieldname>emailresponseto</fieldname>
+   <fieldname>emailnotificationto</fieldname>
+   <fieldname>tokenlength</fieldname>
+   <fieldname>showxquestions</fieldname>
+   <fieldname>showgroupinfo</fieldname>
+   <fieldname>shownoanswer</fieldname>
+   <fieldname>showqnumcode</fieldname>
+   <fieldname>bouncetime</fieldname>
+   <fieldname>bounceprocessing</fieldname>
+   <fieldname>bounceaccounttype</fieldname>
+   <fieldname>bounceaccounthost</fieldname>
+   <fieldname>bounceaccountpass</fieldname>
+   <fieldname>bounceaccountencryption</fieldname>
+   <fieldname>bounceaccountuser</fieldname>
+   <fieldname>showwelcome</fieldname>
+   <fieldname>showprogress</fieldname>
+   <fieldname>questionindex</fieldname>
+   <fieldname>navigationdelay</fieldname>
+   <fieldname>nokeyboard</fieldname>
+   <fieldname>alloweditaftercompletion</fieldname>
+   <fieldname>googleanalyticsstyle</fieldname>
+   <fieldname>googleanalyticsapikey</fieldname>
+   <fieldname>tokenencryptionoptions</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <sid><![CDATA[769299]]></sid>
+    <gsid><![CDATA[1]]></gsid>
+    <admin><![CDATA[inherit]]></admin>
+    <adminemail><![CDATA[inherit]]></adminemail>
+    <anonymized><![CDATA[I]]></anonymized>
+    <faxto/>
+    <format><![CDATA[G]]></format>
+    <savetimings><![CDATA[I]]></savetimings>
+    <template><![CDATA[vanilla]]></template>
+    <language><![CDATA[en]]></language>
+    <additional_languages/>
+    <datestamp><![CDATA[I]]></datestamp>
+    <usecookie><![CDATA[I]]></usecookie>
+    <allowregister><![CDATA[I]]></allowregister>
+    <allowsave><![CDATA[I]]></allowsave>
+    <autonumber_start><![CDATA[0]]></autonumber_start>
+    <autoredirect><![CDATA[N]]></autoredirect>
+    <allowprev><![CDATA[Y]]></allowprev>
+    <printanswers><![CDATA[N]]></printanswers>
+    <ipaddr><![CDATA[I]]></ipaddr>
+    <refurl><![CDATA[I]]></refurl>
+    <showsurveypolicynotice><![CDATA[0]]></showsurveypolicynotice>
+    <publicstatistics><![CDATA[N]]></publicstatistics>
+    <publicgraphs><![CDATA[N]]></publicgraphs>
+    <listpublic><![CDATA[I]]></listpublic>
+    <htmlemail><![CDATA[I]]></htmlemail>
+    <sendconfirmation><![CDATA[I]]></sendconfirmation>
+    <tokenanswerspersistence><![CDATA[I]]></tokenanswerspersistence>
+    <assessments><![CDATA[I]]></assessments>
+    <usecaptcha><![CDATA[E]]></usecaptcha>
+    <usetokens><![CDATA[N]]></usetokens>
+    <bounce_email><![CDATA[inherit]]></bounce_email>
+    <emailresponseto><![CDATA[inherit]]></emailresponseto>
+    <emailnotificationto><![CDATA[inherit]]></emailnotificationto>
+    <tokenlength><![CDATA[-1]]></tokenlength>
+    <showxquestions><![CDATA[N]]></showxquestions>
+    <showgroupinfo><![CDATA[I]]></showgroupinfo>
+    <shownoanswer><![CDATA[I]]></shownoanswer>
+    <showqnumcode><![CDATA[I]]></showqnumcode>
+    <bounceprocessing><![CDATA[N]]></bounceprocessing>
+    <showwelcome><![CDATA[N]]></showwelcome>
+    <showprogress><![CDATA[N]]></showprogress>
+    <questionindex><![CDATA[-1]]></questionindex>
+    <navigationdelay><![CDATA[-1]]></navigationdelay>
+    <nokeyboard><![CDATA[N]]></nokeyboard>
+    <alloweditaftercompletion><![CDATA[I]]></alloweditaftercompletion>
+    <googleanalyticsstyle/>
+    <googleanalyticsapikey/>
+    <tokenencryptionoptions/>
+   </row>
+  </rows>
+ </surveys>
+ <surveys_languagesettings>
+  <fields>
+   <fieldname>surveyls_survey_id</fieldname>
+   <fieldname>surveyls_language</fieldname>
+   <fieldname>surveyls_title</fieldname>
+   <fieldname>surveyls_description</fieldname>
+   <fieldname>surveyls_welcometext</fieldname>
+   <fieldname>surveyls_endtext</fieldname>
+   <fieldname>surveyls_policy_notice</fieldname>
+   <fieldname>surveyls_policy_error</fieldname>
+   <fieldname>surveyls_policy_notice_label</fieldname>
+   <fieldname>surveyls_url</fieldname>
+   <fieldname>surveyls_urldescription</fieldname>
+   <fieldname>surveyls_numberformat</fieldname>
+   <fieldname>attachments</fieldname>
+  </fields>
+  <rows>
+   <row>
+    <surveyls_survey_id><![CDATA[769299]]></surveyls_survey_id>
+    <surveyls_language><![CDATA[en]]></surveyls_language>
+    <surveyls_title><![CDATA[Test intval and floatval]]></surveyls_title>
+    <surveyls_description/>
+    <surveyls_welcometext/>
+    <surveyls_endtext/>
+    <surveyls_policy_notice/>
+    <surveyls_policy_notice_label/>
+    <surveyls_url/>
+    <surveyls_urldescription/>
+    <surveyls_dateformat><![CDATA[9]]></surveyls_dateformat>
+    <surveyls_numberformat><![CDATA[0]]></surveyls_numberformat>
+   </row>
+  </rows>
+ </surveys_languagesettings>
+ <themes>
+  <theme>
+   <sid>769299</sid>
+   <template_name>vanilla</template_name>
+   <config>
+    <options>inherit</options>
+   </config>
+  </theme>
+ </themes>
+</document>
diff --git a/tests/functional/frontend/IntvalFloatvalTest.php b/tests/functional/frontend/IntvalFloatvalTest.php
new file mode 100644
index 00000000000..b1f673cdd08
--- /dev/null
+++ b/tests/functional/frontend/IntvalFloatvalTest.php
@@ -0,0 +1,142 @@
+<?php
+namespace ls\tests;
+use Facebook\WebDriver\WebDriverBy;
+
+/**
+ - @since 2019-01-20
+ * @group jsphp
+ */
+class IntvalFloatvalTest extends TestBaseClassWeb
+{
+    /**
+     * Launch test comparing JS vs PHP and fixed value
+     * @return void
+     */
+    public function testCompare()
+    {
+        // Import survey.
+        $surveyFile = self::$surveysFolder . '/limesurvey_survey_15598_intval_floatval_jsphp_compare.lss';
+        self::importSurvey($surveyFile);
+
+        // Preview survey.
+        $urlMan = \Yii::app()->urlManager;
+        $urlMan->setBaseUrl('http://' . self::$domain . '/index.php');
+        $url = $urlMan->createUrl(
+            'survey/index',
+            [
+                'sid' => self::$surveyId,
+                'newtest' => 'Y',
+            ]
+        );
+
+        // Get questions.
+        $survey = \Survey::model()->findByPk(self::$surveyId);
+        try {
+            // Get first page.
+            self::$webDriver->get($url);
+            /* Fill with data */
+            $aMultiQuestionInfo = self::$testHelper->getSgqa('MULTI',self::$surveyId);
+            $baseSgqa = $aMultiQuestionInfo[2];
+            self::$webDriver->answerTextQuestion($baseSgqa . 'float', '42.42');
+            self::$webDriver->answerTextQuestion($baseSgqa . 'text', 'LimeSurvey');
+            self::$webDriver->answerTextQuestion($baseSgqa . 'floattext', '42.42-LimeSurvey');
+            self::$webDriver->answerTextQuestion($baseSgqa . 'floatoperation', '+42.42 + 33');
+            self::$webDriver->answerTextQuestion($baseSgqa . 'floatnegative', '-3.5');
+            self::$webDriver->answerTextQuestion($baseSgqa . 'floatnegativeoperati', '-3.5+42');
+
+            /* Fill JS result */
+            $intvalFloatJS = self::$webDriver->findElement(WebDriverBy::id('intval-float'))->getText();
+            $floatvalFloatJS = self::$webDriver->findElement(WebDriverBy::id('floatval-float'))->getText();
+            $intvalTextJS = self::$webDriver->findElement(WebDriverBy::id('intval-text'))->getText();
+            $floatvalTextJS = self::$webDriver->findElement(WebDriverBy::id('floatval-text'))->getText();
+            $intvalFloattextJS = self::$webDriver->findElement(WebDriverBy::id('intval-floattext'))->getText();
+            $floatvalFloattextJS = self::$webDriver->findElement(WebDriverBy::id('floatval-floattext'))->getText();
+            $intvalFloatoperationJS = self::$webDriver->findElement(WebDriverBy::id('intval-floatoperation'))->getText();
+            $floatvalFloatoperationJS = self::$webDriver->findElement(WebDriverBy::id('floatval-floatoperation'))->getText();
+            $intvalFloatnegativeJS = self::$webDriver->findElement(WebDriverBy::id('intval-floatnegative'))->getText();
+            $floatvalFloatnegativeJS = self::$webDriver->findElement(WebDriverBy::id('floatval-floatnegative'))->getText();
+            $intvalFloatnegativeoperatiJS = self::$webDriver->findElement(WebDriverBy::id('intval-floatnegativeoperati'))->getText();
+            $floatvalFloatnegativeoperatiJS = self::$webDriver->findElement(WebDriverBy::id('floatval-floatnegativeoperati'))->getText();
+            $intvalHiddenJS = self::$webDriver->findElement(WebDriverBy::id('intval-hidden'))->getText();
+            $floatvalHiddenJS = self::$webDriver->findElement(WebDriverBy::id('floatval-hidden'))->getText();
+            $intvalTrueJS = self::$webDriver->findElement(WebDriverBy::id('intval-true'))->getText();
+            $floatvalTrueJS = self::$webDriver->findElement(WebDriverBy::id('floatval-true'))->getText();
+            $intvalFalseJS = self::$webDriver->findElement(WebDriverBy::id('intval-false'))->getText();
+            $floatvalFalseJS = self::$webDriver->findElement(WebDriverBy::id('floatval-false'))->getText();
+
+            /* Move next */
+            $nextButton = self::$webDriver->findElement(WebDriverBy::id('ls-button-submit'));
+            $nextButton->click();
+
+            /* Fill PHP result */
+            $intvalFloatPHP = self::$webDriver->findElement(WebDriverBy::id('intval-float'))->getText();
+            $floatvalFloatPHP = self::$webDriver->findElement(WebDriverBy::id('floatval-float'))->getText();
+            $intvalTextPHP = self::$webDriver->findElement(WebDriverBy::id('intval-text'))->getText();
+            $floatvalTextPHP = self::$webDriver->findElement(WebDriverBy::id('floatval-text'))->getText();
+            $intvalFloattextPHP = self::$webDriver->findElement(WebDriverBy::id('intval-floattext'))->getText();
+            $floatvalFloattextPHP = self::$webDriver->findElement(WebDriverBy::id('floatval-floattext'))->getText();
+            $intvalFloatoperationPHP = self::$webDriver->findElement(WebDriverBy::id('intval-floatoperation'))->getText();
+            $floatvalFloatoperationPHP = self::$webDriver->findElement(WebDriverBy::id('floatval-floatoperation'))->getText();
+            $intvalFloatnegativePHP = self::$webDriver->findElement(WebDriverBy::id('intval-floatnegative'))->getText();
+            $floatvalFloatnegativePHP = self::$webDriver->findElement(WebDriverBy::id('floatval-floatnegative'))->getText();
+            $intvalFloatnegativeoperatiPHP = self::$webDriver->findElement(WebDriverBy::id('intval-floatnegativeoperati'))->getText();
+            $floatvalFloatnegativeoperatiPHP = self::$webDriver->findElement(WebDriverBy::id('floatval-floatnegativeoperati'))->getText();
+            $intvalHiddenPHP = self::$webDriver->findElement(WebDriverBy::id('intval-hidden'))->getText();
+            $floatvalHiddenPHP = self::$webDriver->findElement(WebDriverBy::id('floatval-hidden'))->getText();
+            $intvalTruePHP = self::$webDriver->findElement(WebDriverBy::id('intval-true'))->getText();
+            $floatvalTruePHP = self::$webDriver->findElement(WebDriverBy::id('floatval-true'))->getText();
+            $intvalFalsePHP = self::$webDriver->findElement(WebDriverBy::id('intval-false'))->getText();
+            $floatvalFalsePHP = self::$webDriver->findElement(WebDriverBy::id('floatval-false'))->getText();
+
+            /* Do the JS vs PHP compare */
+            $this->assertEquals($intvalFloatJS, $intvalFloatPHP, 'intval(42.42) : «' . $intvalFloatJS ."» vs «".$intvalFloatPHP."»");
+            $this->assertEquals($floatvalFloatJS, $floatvalFloatPHP, 'floatval(42.42) : «' . $floatvalFloatJS ."» vs «".$floatvalFloatPHP."»");
+            $this->assertEquals($intvalTextJS, $intvalTextPHP, 'intval(LimeSurvey) : «' . $intvalTextJS ."» vs «".$intvalTextPHP."»");
+            $this->assertEquals($floatvalTextJS, $floatvalTextPHP, 'floatval(LimeSurvey) : «' . $floatvalTextJS ."» vs «".$floatvalTextPHP."»");
+            $this->assertEquals($intvalFloattextJS, $intvalFloattextPHP, 'intval(42.42-LimeSurvey) : «' . $intvalFloattextJS ."» vs «".$intvalFloattextPHP."»");
+            $this->assertEquals($floatvalFloattextJS, $floatvalFloattextPHP, 'floatval(42.42-LimeSurvey) : «' . $floatvalFloattextJS ."» vs «".$floatvalFloattextPHP."»");
+            $this->assertEquals($intvalFloatoperationJS, $intvalFloatoperationPHP, 'intval(+42.42 + 33) : «' . $intvalFloatoperationJS ."» vs «".$intvalFloatoperationPHP."»");
+            $this->assertEquals($floatvalFloatoperationJS, $floatvalFloatoperationPHP, 'floatval(+42.42 + 33) : «' . $floatvalFloatoperationJS ."» vs «".$floatvalFloatoperationPHP."»");
+            $this->assertEquals($intvalFloatnegativeJS, $intvalFloatnegativePHP, 'intval(-3.5) : «' . $intvalFloatnegativeJS ."» vs «".$intvalFloatnegativePHP."»");
+            $this->assertEquals($floatvalFloatnegativeJS, $floatvalFloatnegativePHP, 'floatval(-3.5) : «' . $floatvalFloatnegativeJS ."» vs «".$floatvalFloatnegativePHP."»");
+            $this->assertEquals($intvalFloatnegativeoperatiJS, $intvalFloatnegativeoperatiPHP, 'intval(-3.5+42) : «' . $intvalFloatnegativeoperatiJS ."» vs «".$intvalFloatnegativeoperatiPHP."»");
+            $this->assertEquals($floatvalFloatnegativeoperatiJS, $floatvalFloatnegativeoperatiPHP, 'floatval(-3.5+42) : «' . $floatvalFloatnegativeoperatiJS ."» vs «".$floatvalFloatnegativeoperatiPHP."»");
+            $this->assertEquals($intvalHiddenJS, $intvalHiddenPHP, 'intval(HIDDEN.NAOK) : «' . $intvalHiddenJS ."» vs «".$intvalHiddenPHP."»");
+            $this->assertEquals($floatvalHiddenJS, $floatvalHiddenPHP, 'floatval(HIDDEN.NAOK) : «' . $floatvalHiddenJS ."» vs «".$floatvalHiddenPHP."»");
+            $this->assertEquals($intvalTrueJS, $intvalTruePHP, 'intval(True) : «' . $intvalTrueJS ."» vs «".$intvalTruePHP."»");
+            $this->assertEquals($floatvalTrueJS, $floatvalTruePHP, 'floatval(True) : «' . $floatvalTrueJS ."» vs «".$floatvalTruePHP."»");
+            $this->assertEquals($intvalFalseJS, $intvalFalsePHP, 'intval(False) : «' . $intvalFalseJS ."» vs «".$intvalFalsePHP."»");
+            $this->assertEquals($floatvalFalseJS, $floatvalFalsePHP, 'floatval(False) : «' . $floatvalFalseJS ."» vs «".$floatvalFalsePHP."»");
+            
+            /* Fixed string compare (wait for) : can happen (not a bug), but broke API number */
+            $this->assertEquals($intvalFloatJS, "42", 'intval(42.42) : «' . $intvalFloatJS ."» vs fixed «42»");
+            $this->assertEquals($floatvalFloatJS, "42.42", 'floatval(42.42) : «' . $floatvalFloatJS ."» vs fixed «42.42»");
+            $this->assertEquals($intvalTextJS, "0", 'intval(LimeSurvey) : «' . $intvalTextJS ."» vs fixed «0»");
+            $this->assertEquals($floatvalTextJS, "0", 'floatval(LimeSurvey) : «' . $floatvalTextJS ."» vs fixed «0»");
+            $this->assertEquals($intvalFloattextJS, "42", 'intval(42.42-LimeSurvey) : «' . $intvalFloattextJS ."» vs fixed «42»");
+            $this->assertEquals($floatvalFloattextJS, "42.42", 'floatval(42.42-LimeSurvey) : «' . $floatvalFloattextJS ."» vs fixed «42.42»");
+            $this->assertEquals($intvalFloatoperationJS, "42", 'intval(+42.42 + 33) : «' . $intvalFloatoperationJS ."» vs fixed «42»");
+            $this->assertEquals($floatvalFloatoperationJS, "42.42", 'floatval(+42.42 + 33) : «' . $floatvalFloatoperationJS ."» vs fixed «42.42»");
+            $this->assertEquals($intvalFloatnegativeJS, "-3", 'intval(-3.5) : «' . $intvalFloatnegativeJS ."» vs fixed «-3»");
+            $this->assertEquals($floatvalFloatnegativeJS, "-3.5", 'floatval(-3.5) : «' . $floatvalFloatnegativeJS ."» vs fixed «-3.5»");
+            $this->assertEquals($intvalFloatnegativeoperatiJS, "-3", 'intval(-3.5+42) : «' . $intvalFloatnegativeoperatiJS ."» vs fixed «-3»");
+            $this->assertEquals($floatvalFloatnegativeoperatiJS, "-3.5", 'floatval(-3.5+42) : «' . $floatvalFloatnegativeoperatiJS ."» vs fixed «-3.5»");
+            $this->assertEquals($intvalHiddenJS, "0", 'intval(HIDDEN.NAOK) : «' . $intvalHiddenJS ."» vs fixed «0»");
+            $this->assertEquals($floatvalHiddenJS, "0", 'floatval(HIDDEN.NAOK) : «' . $floatvalHiddenJS ."» vs fixed «0»");
+            $this->assertEquals($intvalTrueJS, "1", 'intval(True) : «' . $intvalTrueJS ."» vs fixed «1»");
+            $this->assertEquals($floatvalTrueJS, "1", 'floatval(True) : «' . $floatvalTrueJS ."» vs fixed «1»");
+            $this->assertEquals($intvalFalseJS, "0", 'intval(False) : «' . $intvalFalseJS ."» vs fixed «0»");
+            $this->assertEquals($floatvalFalseJS, "0", 'floatval(False) : «' . $floatvalFalseJS ."» vs fixed «0»");
+
+        } catch (\Exception $ex) {
+            $screenshot = self::$webDriver->takeScreenshot();
+            $filename = self::$screenshotsFolder.'/'.__CLASS__.'_' . __FUNCTION__ . '.png';
+            file_put_contents($filename, $screenshot);
+            $this->assertFalse(
+                true,
+                'Url: ' . $url . PHP_EOL .
+                'Screenshot in ' .$filename . PHP_EOL . $ex->getMessage()
+            );
+        }
+    }
+}