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run code in 300+ PHP versions simultaneously
<?php $string = 'a b'; $c1 = substr($string, 1, 1); $c2 = mb_substr($string, 1, 1); $c3 = iconv_substr($string, 1, 1); var_dump($c1, $c2, $c3);
Output for git.master, git.master_jit, rfc.property-hooks
string(1) " " string(1) " " string(1) " "

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