Adding new variables in order to now the big PHP version branchs IS_PHP_SUP_OR_EQ_53, IS_PHP_SUP_OR_EQ_52, IS_PHP_SUP_OR_EQ_51 see #3799

main/inc/lib/internationalization.lib.php

@@ -1972,12 +1972,12 @@ function api_strrpos($haystack, $needle, $offset = 0, $encoding = null) {
             $needle 	= api_utf8_encode($needle, $encoding);
         }
         // In PHP 5.1 the $offset parameter didn't exist see http://php.net/manual/en/function.mb-strrpos.php
-        if (MBSTRING_INSTALLED && IS_PHP_51) {       	
+        if (MBSTRING_INSTALLED && IS_PHP_SUP_OR_EQ_51) {       	
             //return @mb_strrpos($haystack, $needle, $offset, 'UTF-8');
             //@todo fix the missing $offset parameter
             return @mb_strrpos($haystack, $needle, 'UTF-8');
         }        
-        if (MBSTRING_INSTALLED && IS_PHP_52) {
+        if (MBSTRING_INSTALLED && IS_PHP_SUP_OR_EQ_52) {
         	return @mb_strrpos($haystack, $needle, $offset, 'UTF-8');
         }
         

main/inc/lib/main_api.lib.php

@@ -158,9 +158,14 @@ define('USERNAME_PURIFIER_SHALLOW', '/\s/');
 // Constants for detection some important PHP5 subversions.
 $php_version = (float) PHP_VERSION;
 
-define('IS_PHP_53', ($php_version >= 5.3));
-define('IS_PHP_52', ($php_version >= 5.2 && !IS_PHP_53));
-define('IS_PHP_51', ($php_version >= 5.1 && !IS_PHP_52 && !IS_PHP_53));
+define('IS_PHP_52', !((float)$php_version < 5.2));
+define('IS_PHP_53', !((float)$php_version < 5.3));
+
+define('IS_PHP_SUP_OR_EQ_53', ($php_version >= 5.3));
+define('IS_PHP_SUP_OR_EQ_52', ($php_version >= 5.2 && !IS_PHP_53));
+define('IS_PHP_SUP_OR_EQ_51', ($php_version >= 5.1 && !IS_PHP_52 && !IS_PHP_53));
+
+
 
 // This constant is a result of Windows OS detection, it has a boolean value:
 // true whether the server runs on Windows OS, false otherwise.