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phphtmlpreg-match

Weird result in php

Why the output of this code is "true" ? 

<?php

if (preg_match("/^[Ī]+$/", "ê")) {
    die("true");
} else {
    die("false");
}

?>

The result should be false not true!

Solution

  • Your strings are unicode, so if you want the preg_match to work on a unicode string you should add the u modifier:

    if (preg_match("/^[Ī]+$/u", "ê")) {