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<?php $a = array( 0 => array( 0 => ' abc', 1 => ' def', 2 => 'ghi ' ) ); var_dump($a); array_walk($a, 'trim'); var_dump($a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> array(3) { [0]=> string(4) " abc" [1]=> string(4) " def" [2]=> string(5) "ghi " } } Fatal error: Uncaught TypeError: trim(): Argument #1 ($string) must be of type string, array given in /in/846Ji:14 Stack trace: #0 [internal function]: trim(Array, 0) #1 /in/846Ji(14): array_walk(Array, 'trim') #2 {main} thrown in /in/846Ji on line 14
Process exited with code 255.
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 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
array(1) { [0]=> array(3) { [0]=> string(4) " abc" [1]=> string(4) " def" [2]=> string(5) "ghi " } } Warning: trim() expects parameter 1 to be string, array given in /in/846Ji on line 14 array(1) { [0]=> array(3) { [0]=> string(4) " abc" [1]=> string(4) " def" [2]=> string(5) "ghi " } }
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
array(1) { [0]=> array(3) { [0]=> string(4) " abc" [1]=> string(4) " def" [2]=> string(5) "ghi " } } Notice: Array to string conversion in /in/846Ji on line 14 array(1) { [0]=> array(3) { [0]=> string(4) " abc" [1]=> string(4) " def" [2]=> string(5) "ghi " } }

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