3v4l.org

run code in 300+ PHP versions simultaneously
<?php $text = 'KsKd2s4dAs =AhAd2s4dKs =AsAd2s4dKs 5s5d6s6d2c AsAd6s6d2c =AdQdKdJdTd =AhQhKhJhTh =AsQsKsJsTs'; echo preg_replace_callback('~=(\S+(?:\s+=\S+)*)~', function($m) { return preg_replace('~\s+~', '', $m[1]); }, $text);
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
KsKd2s4dAs AhAd2s4dKs=AsAd2s4dKs 5s5d6s6d2c AsAd6s6d2c AdQdKdJdTd=AhQhKhJhTh=AsQsKsJsTs
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 KsKd2s4dAs AhAd2s4dKs=AsAd2s4dKs 5s5d6s6d2c AsAd6s6d2c AdQdKdJdTd=AhQhKhJhTh=AsQsKsJsTs
preferences:
142.27 ms | 408 KiB | 5 Q