Add generate random string method

misantron · Jan 26, 2015 · b1c9d04 · b1c9d04
1 parent 91fbf21
commit b1c9d04
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Showing 2 changed files with 29 additions and 0 deletions.
diff --git a/src/Helper/StringHelper.php b/src/Helper/StringHelper.php
@@ -46,4 +46,20 @@ public static function plural($number, $forms)
         }
         return $number%10==1&&$number%100!=11?$forms[0]:($number%10>=2&&$number%10<=4&&($number%100<10||$number%100>=20)?$forms[1]:$forms[2]);
     }
+
+    /**
+     * @param int $length
+     * @return string
+     */
+    public static function generateRandom($length = 10)
+    {
+        $randChars = array();
+        $alphabet = 'abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+        $alphabetSize = strlen($alphabet);
+        while(--$length+1){
+            $randChars[] = $alphabet[mt_rand(0, $alphabetSize-1)];;
+        }
+        shuffle($randChars);
+        return implode('', $randChars);
+    }
 }
diff --git a/tests/Helper/StringHelperTest.php b/tests/Helper/StringHelperTest.php
@@ -2,6 +2,8 @@
 
 namespace Utility\Test\Helper;
 
+use Utility\Helper\StringHelper;
+
 class StringHelperTest extends \PHPUnit_Framework_TestCase
 {
     public function testCut()
@@ -13,4 +15,15 @@ public function testPlural()
     {
 
     }
+
+    public function testGenerateRandom()
+    {
+        $string = StringHelper::generateRandom();
+        $this->assertEquals(10, strlen($string));
+        $this->assertRegExp('/^[a-zA-Z0-9]{10}$/', $string);
+
+        $string = StringHelper::generateRandom(17);
+        $this->assertEquals(17, strlen($string));
+        $this->assertRegExp('/^[a-zA-Z0-9]{17}$/', $string);
+    }
 }