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<?php $a = array(0,1,2); $maxtries = intval(count($a)*(floatval(count($a)+1)/2.0)); $tries = 0; while(!empty($a) && $tries<$maxtries) { echo "Try number: ".($tries+1)."\n"; print_r($a); if($a[$tries]==1 && $tries<3) { array_push($a, $a[$tries]); } unset($a[$tries]); $tries += 1; } echo "done\n"; print_r($a);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 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, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Try number: 1 Array ( [0] => 0 [1] => 1 [2] => 2 ) Try number: 2 Array ( [1] => 1 [2] => 2 ) Try number: 3 Array ( [2] => 2 [3] => 1 ) Try number: 4 Array ( [3] => 1 ) done Array ( )
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 Try number: 1 Array ( [0] => 0 [1] => 1 [2] => 2 ) Try number: 2 Array ( [1] => 1 [2] => 2 ) Try number: 3 Array ( [2] => 2 [3] => 1 ) Try number: 4 Array ( [3] => 1 ) done Array ( )

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268.66 ms | 402 KiB | 341 Q