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<?php $str = 'fdfqsdfqsdf%A%2%B%4%C%D%7sddsdfsdf'; $res = preg_replace_callback(',%.?,', function (array $matches) { if (preg_match(',%\d+,', $matches[0])) { return 'FOO'; } }); echo $res; $res = preg_replace_callback(',%\d+?,', function (array $matches) { return 'FOO'; }); echo $res;
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: preg_replace_callback() expects at least 3 arguments, 2 given in /in/Ls6Hi:4 Stack trace: #0 /in/Ls6Hi(4): preg_replace_callback(',%.?,', Object(Closure)) #1 {main} thrown in /in/Ls6Hi on line 4
Process exited with code 255.

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