Online PHP editor | output for M8jT2

@ 2024-05-30T02:47:32Z

<?php

$str = "příliš žluťoučký img_9 kůn úpěl ďábelské ódy";

var_export(mb_strpos($str, 'img_'));

echo "\n";

var_export(preg_match_all('/\G(?!img_\d)\X/u', $str, $m));

echo "\n";

$mbLength = preg_match_all('/\G(?!img_\d)\X/u', $str, $m);
var_export(mb_strlen($str) !== $mbLength ? $mbLength : 'not found');

echo "\n";

var_export(
    preg_match('/\X*?(?=img_\d)/u', $str, $m) ? mb_strlen($m[0]) : 'not found' 
);

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: 17 17 17 17
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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