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<?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 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Parse error: syntax error, unexpected token "[", expecting ":" in /in/HY5B7 on line 8
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant match - assumed 'match' (this will throw an Error in a future version of PHP) in /in/HY5B7 on line 8 1 matches for "a" found Warning: Use of undefined constant match - assumed 'match' (this will throw an Error in a future version of PHP) in /in/HY5B7 on line 8 1 matches for "a" found Warning: Use of undefined constant match - assumed 'match' (this will throw an Error in a future version of PHP) in /in/HY5B7 on line 8 1 matches for "a" found Warning: Use of undefined constant match - assumed 'match' (this will throw an Error in a future version of PHP) in /in/HY5B7 on line 8 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 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 1 matches for "a" found Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 1 matches for "a" found Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 1 matches for "a" found Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 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 5.6.0 - 5.6.40
Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 1 matches for "a" found Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 1 matches for "a" found Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 1 matches for "a" found Notice: Use of undefined constant match - assumed 'match' in /in/HY5B7 on line 8 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/HY5B7 on line 16
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '[' in /in/HY5B7 on line 8
Process exited with code 255.
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