3v4l.org

run code in 300+ PHP versions simultaneously
<?php $subject = 'Aaaafaba Bbab'; $ret = preg_replace_callback( '~[a]+~i', function ($match) { echo strlen($match[0]), ' matches for "a" found', PHP_EOL; }, $subject ); var_dump($ret); var_dump($subject); $ret = preg_replace_callback_array( [ '~[a]+~i' => function ($match) { echo strlen($match[0]), ' matches for "a" found', PHP_EOL; }, '~[b]+~i' => function ($match) { echo strlen($match[0]), ' matches for "b" found', PHP_EOL; } ], $subject ); var_dump($ret); var_dump($subject);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
4 matches for "a" found 1 matches for "a" found 1 matches for "a" found 1 matches for "a" found string(6) "fb Bbb" string(13) "Aaaafaba Bbab" 4 matches for "a" found 1 matches for "a" found 1 matches for "a" found 1 matches for "a" found 1 matches for "b" found 3 matches for "b" found string(2) "f " string(13) "Aaaafaba Bbab"
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 4 matches for "a" found 1 matches for "a" found 1 matches for "a" found 1 matches for "a" found string(6) "fb Bbb" string(13) "Aaaafaba Bbab" 4 matches for "a" found 1 matches for "a" found 1 matches for "a" found 1 matches for "a" found 1 matches for "b" found 3 matches for "b" found string(2) "f " string(13) "Aaaafaba Bbab"
Output for 5.4.8 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21
4 matches for "a" found 1 matches for "a" found 1 matches for "a" found 1 matches for "a" found string(6) "fb Bbb" string(13) "Aaaafaba Bbab" Fatal error: Call to undefined function preg_replace_callback_array() in /in/nWKh4 on line 16
Process exited with code 255.
preferences:
191.08 ms | 402 KiB | 234 Q