diff --git a/libs/sysplugins/smarty_internal_cacheresource_file.php b/libs/sysplugins/smarty_internal_cacheresource_file.php
index 7df4ddffb..5e745689d 100644
--- a/libs/sysplugins/smarty_internal_cacheresource_file.php
+++ b/libs/sysplugins/smarty_internal_cacheresource_file.php
@@ -108,7 +108,8 @@ public function writeCachedContent(Smarty_Internal_Template $_template, $content
         if ($_template->smarty->ext->_writeFile->writeFile($_template->cached->filepath, $content,
                                                            $_template->smarty) === true
         ) {
-            if (function_exists('opcache_invalidate') && strlen(ini_get("opcache.restrict_api")) < 1) {
+            if (function_exists('opcache_invalidate')
+                && (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)) {
                 opcache_invalidate($_template->cached->filepath, true);
             } elseif (function_exists('apc_compile_file')) {
                 apc_compile_file($_template->cached->filepath);
diff --git a/libs/sysplugins/smarty_internal_config_file_compiler.php b/libs/sysplugins/smarty_internal_config_file_compiler.php
index b1ef958cd..a3324fcfd 100644
--- a/libs/sysplugins/smarty_internal_config_file_compiler.php
+++ b/libs/sysplugins/smarty_internal_config_file_compiler.php
@@ -117,7 +117,9 @@ public function compileTemplate(Smarty_Internal_Template $template)
         /* @var Smarty_Internal_ConfigFileParser $this->parser */
         $this->parser = new $this->parser_class($this->lex, $this);
 
-        if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
+        if (function_exists('mb_internal_encoding')
+            && function_exists('ini_get')
+            && ((int) ini_get('mbstring.func_overload')) & 2) {
             $mbEncoding = mb_internal_encoding();
             mb_internal_encoding('ASCII');
         } else {
diff --git a/libs/sysplugins/smarty_internal_method_clearcompiledtemplate.php b/libs/sysplugins/smarty_internal_method_clearcompiledtemplate.php
index a1f1a80bb..cd1adada3 100644
--- a/libs/sysplugins/smarty_internal_method_clearcompiledtemplate.php
+++ b/libs/sysplugins/smarty_internal_method_clearcompiledtemplate.php
@@ -111,7 +111,8 @@ public function clearCompiledTemplate(Smarty $smarty, $resource_name = null, $co
 
                 if ($unlink && @unlink($_filepath)) {
                     $_count ++;
-                    if (function_exists('opcache_invalidate') && strlen(ini_get("opcache.restrict_api")) < 1) {
+                    if (function_exists('opcache_invalidate')
+                        && (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)) {
                         opcache_invalidate($_filepath, true);
                     }
                 }
diff --git a/libs/sysplugins/smarty_internal_resource_php.php b/libs/sysplugins/smarty_internal_resource_php.php
index 52e7096b3..1b261036e 100644
--- a/libs/sysplugins/smarty_internal_resource_php.php
+++ b/libs/sysplugins/smarty_internal_resource_php.php
@@ -37,7 +37,7 @@ class Smarty_Internal_Resource_Php extends Smarty_Internal_Resource_File
      */
     public function __construct()
     {
-        $this->short_open_tag = ini_get('short_open_tag');
+        $this->short_open_tag = function_exists('ini_get') ? ini_get('short_open_tag') : 1;
     }
 
     /**
@@ -79,13 +79,17 @@ public function renderUncompiled(Smarty_Template_Source $source, Smarty_Internal
         extract($_template->getTemplateVars());
 
         // include PHP template with short open tags enabled
-        ini_set('short_open_tag', '1');
+        if (function_exists('ini_set')) {
+            ini_set('short_open_tag', '1');
+        }
         /** @var Smarty_Internal_Template $_smarty_template
          * used in included file
          */
         $_smarty_template = $_template;
         include($source->filepath);
-        ini_set('short_open_tag', $this->short_open_tag);
+        if (function_exists('ini_set')) {
+            ini_set('short_open_tag', $this->short_open_tag);
+        }
     }
 
     /**
diff --git a/libs/sysplugins/smarty_internal_runtime_cacheresourcefile.php b/libs/sysplugins/smarty_internal_runtime_cacheresourcefile.php
index 7b7a9f685..24cc749da 100644
--- a/libs/sysplugins/smarty_internal_runtime_cacheresourcefile.php
+++ b/libs/sysplugins/smarty_internal_runtime_cacheresourcefile.php
@@ -125,7 +125,8 @@ public function clear(Smarty $smarty, $resource_name, $cache_id, $compile_id, $e
                         }
                     }
                     $_count += @unlink($_filepath) ? 1 : 0;
-                    if (function_exists('opcache_invalidate') && strlen(ini_get("opcache.restrict_api")) < 1) {
+                    if (function_exists('opcache_invalidate')
+                        && (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)) {
                         opcache_invalidate($_filepath, true);
                     }
                 }
diff --git a/libs/sysplugins/smarty_internal_smartytemplatecompiler.php b/libs/sysplugins/smarty_internal_smartytemplatecompiler.php
index 8cd37dd56..c227a4482 100644
--- a/libs/sysplugins/smarty_internal_smartytemplatecompiler.php
+++ b/libs/sysplugins/smarty_internal_smartytemplatecompiler.php
@@ -94,7 +94,9 @@ protected function doCompile($_content, $isTemplateSource = false)
         if ($isTemplateSource && $this->template->caching) {
             $this->parser->insertPhpCode("<?php\n\$_smarty_tpl->compiled->nocache_hash = '{$this->nocache_hash}';\n?>\n");
         }
-        if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
+        if (function_exists('mb_internal_encoding')
+            && function_exists('ini_get')
+            && ((int) ini_get('mbstring.func_overload')) & 2) {
             $mbEncoding = mb_internal_encoding();
             mb_internal_encoding('ASCII');
         } else {
diff --git a/libs/sysplugins/smarty_template_compiled.php b/libs/sysplugins/smarty_template_compiled.php
index 18f9d562c..e35d93619 100644
--- a/libs/sysplugins/smarty_template_compiled.php
+++ b/libs/sysplugins/smarty_template_compiled.php
@@ -126,7 +126,8 @@ public function process(Smarty_Internal_Template $_smarty_tpl)
      */
     private function loadCompiledTemplate(Smarty_Internal_Template $_smarty_tpl)
     {
-        if (function_exists('opcache_invalidate') && strlen(ini_get("opcache.restrict_api")) < 1) {
+        if (function_exists('opcache_invalidate')
+            && (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)) {
             opcache_invalidate($this->filepath, true);
         } elseif (function_exists('apc_compile_file')) {
             apc_compile_file($this->filepath);