3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "abcdأبتث"; $charsCount = mb_strlen($string); for($i = 0; $i < $charsCount; $i++){ $char = mb_substr($string, $i, 1); var_dump($char); }
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14
string(1) "a" string(1) "b" string(1) "c" string(1) "d" string(2) "أ" string(2) "ب" string(2) "ت" string(2) "ث"

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80.02 ms | 407 KiB | 5 Q