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Mountains (v3.2.1) edition

Rule mb_str_functions

Replace non multibyte-safe functions with corresponding mb function.


Using this rule is risky.

Risky when any of the functions are overridden, or when relying on the string byte size rather than its length in characters.


Example #1

--- Original
+++ New
-$a = strlen($a);
-$a = strpos($a, $b);
-$a = strrpos($a, $b);
-$a = substr($a, $b);
-$a = strtolower($a);
-$a = strtoupper($a);
-$a = stripos($a, $b);
-$a = strripos($a, $b);
-$a = strstr($a, $b);
-$a = stristr($a, $b);
-$a = strrchr($a, $b);
-$a = substr_count($a, $b);
+$a = mb_strlen($a);
+$a = mb_strpos($a, $b);
+$a = mb_strrpos($a, $b);
+$a = mb_substr($a, $b);
+$a = mb_strtolower($a);
+$a = mb_strtoupper($a);
+$a = mb_stripos($a, $b);
+$a = mb_strripos($a, $b);
+$a = mb_strstr($a, $b);
+$a = mb_stristr($a, $b);
+$a = mb_strrchr($a, $b);
+$a = mb_substr_count($a, $b);
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