3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '(?<!<br>)(?<!\s)\s*(\((?:(?:(?!<br>|\(|\)).)*(?:\((?:(?!<br>|\(|\)).)*\))?)*?\))\s*(\{)'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".mb_ereg_replace($regex,'WORKED',$test_string)."\n"; echo "2:".preg_replace('/'.$regex.'/u','WORKED',$test_string)."\n"; echo "3:".preg_replace('/'.$regex.'/','WORKED',$test_string)."\n";
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 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 - 8.3.6
1:AAAAAAAAAAAAAA{AA 2:AAAAAAAAAAAAAA{AA 3:AAAAAAAAAAAAAA{AA
Output for 4.3.4 - 4.3.11, 4.4.0 - 4.4.9
Warning: mb_ereg_replace(): mbregex compile err: undefined (?...) sequence in /in/UgmXc on line 4 1: 2:AAAAAAAAAAAAAA{AA 3:AAAAAAAAAAAAAA{AA
Output for 4.3.2 - 4.3.3
Fatal error: Call to undefined function: mb_ereg_replace() in /in/UgmXc on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: mb_ereg_replace() in /in/UgmXc on line 4
preferences:
213.19 ms | 401 KiB | 313 Q