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run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = ['First', 'Second', 'Third', 'Fourth', 'Fifth', 'Sixth']; $temp = $data; $result = []; foreach($data as $i=>$item) { $item = array_shift($temp); $pair = array_rand($temp); $result[] = [$item, $temp[$pair]]; unset($temp[$pair]); } var_dump($result);
Output for 7.1.0
Warning: array_rand(): Array is empty in /in/bcdGM on line 9 Notice: Undefined index: in /in/bcdGM on line 10 Warning: array_rand(): Array is empty in /in/bcdGM on line 9 Notice: Undefined index: in /in/bcdGM on line 10 Warning: array_rand(): Array is empty in /in/bcdGM on line 9 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Sixth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(6) "Fourth" } [2]=> array(2) { [0]=> string(5) "Third" [1]=> string(5) "Fifth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.7, 5.4.24, 5.5.12, 5.5.24, 5.6.11, 7.0.14
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(6) "Second" } [1]=> array(2) { [0]=> string(5) "Third" [1]=> string(5) "Fifth" } [2]=> array(2) { [0]=> string(6) "Fourth" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.29 - 5.4.30, 5.5.20 - 5.5.21, 5.6.13, 7.0.4, 7.0.7
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(6) "Second" } [1]=> array(2) { [0]=> string(5) "Third" [1]=> string(6) "Fourth" } [2]=> array(2) { [0]=> string(5) "Fifth" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.15, 5.5.23, 5.5.28, 5.6.12, 7.0.6
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(6) "Fourth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Third" } [2]=> array(2) { [0]=> string(5) "Fifth" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.12, 5.4.17, 5.5.9, 5.5.16, 5.6.4 - 5.6.5, 5.6.18, 7.0.1, 7.0.3, 7.0.5
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Sixth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Third" } [2]=> array(2) { [0]=> string(6) "Fourth" [1]=> string(5) "Fifth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.10, 5.4.42, 5.5.8, 5.5.30, 5.6.6 - 5.6.7, 5.6.10, 5.6.14, 7.0.2
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Third" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Sixth" } [2]=> array(2) { [0]=> string(6) "Fourth" [1]=> string(5) "Fifth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.11, 5.4.35, 5.4.37 - 5.4.38, 5.5.5, 5.5.13, 5.5.15, 5.5.19, 5.5.22, 5.5.25, 5.6.0, 5.6.8, 7.0.0
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Sixth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(6) "Fourth" } [2]=> array(2) { [0]=> string(5) "Third" [1]=> string(5) "Fifth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.3 - 5.4.4, 5.4.20, 5.4.22, 5.4.28, 5.5.3, 5.5.6, 5.5.18, 5.6.3, 5.6.20, 5.6.28
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(6) "Second" } [1]=> array(2) { [0]=> string(5) "Third" [1]=> string(5) "Sixth" } [2]=> array(2) { [0]=> string(6) "Fourth" [1]=> string(5) "Fifth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.5, 5.4.16, 5.4.31, 5.4.39, 5.4.41, 5.4.44, 5.5.0, 5.5.11, 5.5.27, 5.5.36, 5.6.1 - 5.6.2, 5.6.21 - 5.6.22
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Fifth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Third" } [2]=> array(2) { [0]=> string(6) "Fourth" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.8 - 5.4.9, 5.4.18, 5.4.21, 5.5.10, 5.5.29, 5.6.19
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Third" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Fifth" } [2]=> array(2) { [0]=> string(6) "Fourth" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.6, 5.4.19, 5.4.23, 5.4.34, 5.4.36, 5.5.26, 5.6.17
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Fifth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Sixth" } [2]=> array(2) { [0]=> string(5) "Third" [1]=> string(6) "Fourth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.1 - 5.4.2, 5.4.26, 5.5.33, 5.5.35, 5.6.9, 5.6.15 - 5.6.16
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Third" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(6) "Fourth" } [2]=> array(2) { [0]=> string(5) "Fifth" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.5.32, 5.5.34
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(6) "Fourth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Sixth" } [2]=> array(2) { [0]=> string(5) "Third" [1]=> string(5) "Fifth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.25, 5.4.43, 5.4.45, 5.5.1 - 5.5.2, 5.5.7, 5.5.31
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Fifth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(6) "Fourth" } [2]=> array(2) { [0]=> string(5) "Third" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.0, 5.4.14, 5.4.32, 5.4.40, 5.5.4, 5.5.14
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(6) "Fourth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Fifth" } [2]=> array(2) { [0]=> string(5) "Third" [1]=> string(5) "Sixth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 5.4.13, 5.4.27
Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 Notice: Undefined index: in /in/bcdGM on line 10 array(6) { [0]=> array(2) { [0]=> string(5) "First" [1]=> string(5) "Sixth" } [1]=> array(2) { [0]=> string(6) "Second" [1]=> string(5) "Fifth" } [2]=> array(2) { [0]=> string(5) "Third" [1]=> string(6) "Fourth" } [3]=> array(2) { [0]=> NULL [1]=> NULL } [4]=> array(2) { [0]=> NULL [1]=> NULL } [5]=> array(2) { [0]=> NULL [1]=> NULL } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/bcdGM on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/bcdGM on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/bcdGM on line 3
Process exited with code 255.