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<?php $string = 'gamer thing gamer games test games'; $pattern = '/\b(?<keyword>gamer|games)\b/'; // We'll append to this array after we use a given keyword $usedKeywords = []; $finalString = preg_replace_callback( $pattern, // Remember to capture the array by-ref static function (array $matches) use (&$usedKeywords) { $thisKeyword = $matches['keyword']; if (in_array($thisKeyword, $usedKeywords, true)) { return $thisKeyword; } $usedKeywords[] = $thisKeyword; // Do your replacement here return '~'.$thisKeyword.'~'; }, $string ); print_r($finalString);
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 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
~gamer~ thing gamer ~games~ test games
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
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 ~gamer~ thing gamer ~games~ test games
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179.12 ms | 409 KiB | 5 Q