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<?php $array = array('one','two','tre','four','five'); $newArray = []; foreach ($array as $el) { foreach ($array as $el2) { if ($el === $el2) continue; $newArray[] = $el."/".$el2; } array_shift($array); } print_r($newArray);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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 - 8.3.4, 8.3.6
Array ( [0] => one/two [1] => one/tre [2] => one/four [3] => one/five [4] => two/tre [5] => two/four [6] => two/five [7] => tre/four [8] => tre/five [9] => four/five )
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 ( [0] => one/two [1] => one/tre [2] => one/four [3] => one/five [4] => two/tre [5] => two/four [6] => two/five [7] => tre/four [8] => tre/five [9] => four/five )

preferences:
182.48 ms | 402 KiB | 288 Q