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run code in 300+ PHP versions simultaneously
<?php // convert decimal to base 2 without using base_convert or printf $base = 2; $decnum = 23; $num = 23; $stack = null; while( $num > 0) { $arr[] = $num % $base; // store remainder in array $num = floor($num/$base); // no integer division } var_dump($arr); $wrong = join('',$arr); var_dump($wrong); $cat = join('',array_reverse($arr)); var_dump($cat); printf("%b\n",$decnum); echo base_convert(23,10,2); // now using the stack while( $decnum > 0) { array_push($stack,($num % $base)); // store remainder on stack $decnum = floor($decnum/$base); // no integer division } for ($i=0,$max = count($stack);$i < $max; $i++) { echo array_pop($stack); } echo "\n";
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
array(5) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(0) [4]=> int(1) } string(5) "11101" string(5) "10111" 10111 10111 Fatal error: Uncaught TypeError: array_push(): Argument #1 ($array) must be of type array, null given in /in/2rcuL:24 Stack trace: #0 /in/2rcuL(24): array_push(NULL, 0) #1 {main} thrown in /in/2rcuL on line 24
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(5) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(0) [4]=> int(1) } string(5) "11101" string(5) "10111" 10111 10111 Fatal error: Uncaught TypeError: array_push(): Argument #1 ($array) must be of type array, null given in /in/2rcuL:24 Stack trace: #0 /in/2rcuL(24): array_push(NULL, 0) #1 {main} thrown in /in/2rcuL on line 24
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(5) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(0) [4]=> int(1) } string(5) "11101" string(5) "10111" 10111 10111 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: count(): Parameter must be an array or an object that implements Countable in /in/2rcuL on line 27
Output for 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 - 7.1.25
array(5) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(0) [4]=> int(1) } string(5) "11101" string(5) "10111" 10111 10111 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24 Warning: array_push() expects parameter 1 to be array, null given in /in/2rcuL on line 24
Output for 4.3.2 - 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
array(5) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(0) [4]=> int(1) } string(5) "11101" string(5) "10111" 10111 10111 Warning: array_push(): First argument should be an array in /in/2rcuL on line 24 Warning: array_push(): First argument should be an array in /in/2rcuL on line 24 Warning: array_push(): First argument should be an array in /in/2rcuL on line 24 Warning: array_push(): First argument should be an array in /in/2rcuL on line 24 Warning: array_push(): First argument should be an array in /in/2rcuL on line 24
Output for 4.3.0 - 4.3.1
array(5) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(0) [4]=> int(1) } string(5) "11101" string(5) "10111" 10111 10111 Warning: array_push() [http://www.php.net/function.array-push]: First argument should be an array in /in/2rcuL on line 24 Warning: array_push() [http://www.php.net/function.array-push]: First argument should be an array in /in/2rcuL on line 24 Warning: array_push() [http://www.php.net/function.array-push]: First argument should be an array in /in/2rcuL on line 24 Warning: array_push() [http://www.php.net/function.array-push]: First argument should be an array in /in/2rcuL on line 24 Warning: array_push() [http://www.php.net/function.array-push]: First argument should be an array in /in/2rcuL on line 24
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