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<?php $string = '@mention_1 @$badmention Manual balls knit cardigan @120rb email me @ example@example.com'; $count = preg_match_all( '/(?:^|\s)@\K\w+/', $string, $matches ); var_export([ 'count' => $count, 'matches' => $matches[0] ]);
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
array ( 'count' => 2, 'matches' => array ( 0 => 'mention_1', 1 => '120rb', ), )
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 array ( 'count' => 2, 'matches' => array ( 0 => 'mention_1', 1 => '120rb', ), )

preferences:
147.33 ms | 408 KiB | 5 Q