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<?php function depth_picker($arr, $temp_string, &$collect) { if ($temp_string != "") $collect []= $temp_string; for ($i=0; $i<sizeof($arr);$i++) { $arrcopy = $arr; $elem = array_splice($arrcopy, $i, 1); // removes and returns the i'th element if (sizeof($arrcopy) > 0) { depth_picker($arrcopy, $temp_string ." " . $elem[0], $collect); } else { $collect []= $temp_string. " " . $elem[0]; } } } $collect = array(); depth_picker(array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'), "", $collect); print_r($collect);
Output for git.master_jit
Fatal error: Out of memory (allocated 14684160 bytes) (tried to allocate 4194312 bytes) in /in/iUCk4 on line 13 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for git.master, rfc.property-hooks
Fatal error: Out of memory (allocated 27267072 bytes) (tried to allocate 8388616 bytes) in /in/iUCk4 on line 5 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.

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