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<?php function createCombinations($input, $length) { foreach($input as $c) { if($length == 1) { yield $c; return; } else { foreach(createCombinations($input, $length -1) as $s) { yield $c + $s; return; } } } } $texte = "abcdefghijklmnopqrstuvwxyz0123456789"; $input = str_split($texte ); $generator = createCombinations($input, 4); foreach($generator as $result) { echo $result; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/tvbJt:14 Stack trace: #0 /in/tvbJt(13): createCombinations(Array, 2) #1 /in/tvbJt(13): createCombinations(Array, 3) #2 /in/tvbJt(24): createCombinations(Array, 4) #3 {main} thrown in /in/tvbJt on line 14
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/tvbJt:14 Stack trace: #0 /in/tvbJt(13): createCombinations(Array, 2) #1 /in/tvbJt(13): createCombinations(Array, 3) #2 /in/tvbJt(24): createCombinations(Array, 4) #3 {main} thrown in /in/tvbJt on line 14
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: A non-numeric value encountered in /in/tvbJt on line 14 Warning: A non-numeric value encountered in /in/tvbJt on line 14 Warning: A non-numeric value encountered in /in/tvbJt on line 14 Warning: A non-numeric value encountered in /in/tvbJt on line 14 0
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
0
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$c' (T_VARIABLE) in /in/tvbJt on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/tvbJt on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_VARIABLE in /in/tvbJt on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/tvbJt on line 8
Process exited with code 255.

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