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<?php $x=array( 1 => 'ghj', 2 => 234, 3 => 234.34, 4 => '123', 5 => 'as12345' ); $x2=$x; $x3=$x; array_walk($x2,'intval'); $x = array_map(intval,$x); $x3 = array_map(int,$x3); var_dump($x2,$x,$x3) ?>
based on X3Zuu
Output for 7.2.0
Warning: Use of undefined constant intval - assumed 'intval' (this will throw an Error in a future version of PHP) in /in/efdvF on line 14 Warning: Use of undefined constant int - assumed 'int' (this will throw an Error in a future version of PHP) in /in/efdvF on line 15 Warning: array_map() expects parameter 1 to be a valid callback, function 'int' not found or invalid function name in /in/efdvF on line 15 array(5) { [1]=> string(3) "ghj" [2]=> int(234) [3]=> float(234.34) [4]=> string(3) "123" [5]=> string(7) "as12345" } array(5) { [1]=> int(0) [2]=> int(234) [3]=> int(234) [4]=> int(123) [5]=> int(0) } NULL
Output for 5.3.0 - 7.1.10
Notice: Use of undefined constant intval - assumed 'intval' in /in/efdvF on line 14 Notice: Use of undefined constant int - assumed 'int' in /in/efdvF on line 15 Warning: array_map() expects parameter 1 to be a valid callback, function 'int' not found or invalid function name in /in/efdvF on line 15 array(5) { [1]=> string(3) "ghj" [2]=> int(234) [3]=> float(234.34) [4]=> string(3) "123" [5]=> string(7) "as12345" } array(5) { [1]=> int(0) [2]=> int(234) [3]=> int(234) [4]=> int(123) [5]=> int(0) } NULL
Output for 4.3.2 - 5.2.17
Notice: Use of undefined constant intval - assumed 'intval' in /in/efdvF on line 14 Notice: Use of undefined constant int - assumed 'int' in /in/efdvF on line 15 Warning: array_map(): The first argument, 'int', should be either NULL or a valid callback in /in/efdvF on line 15 array(5) { [1]=> string(3) "ghj" [2]=> int(234) [3]=> float(234.34) [4]=> string(3) "123" [5]=> string(7) "as12345" } array(5) { [1]=> int(0) [2]=> int(234) [3]=> int(234) [4]=> int(123) [5]=> int(0) } NULL
Output for 4.3.0 - 4.3.1
Notice: Use of undefined constant intval - assumed 'intval' in /in/efdvF on line 14 Notice: Use of undefined constant int - assumed 'int' in /in/efdvF on line 15 Warning: array_map() [http://www.php.net/function.array-map]: The first argument, 'int', should be either NULL or a valid callback in /in/efdvF on line 15 array(5) { [1]=> string(3) "ghj" [2]=> int(234) [3]=> float(234.34) [4]=> string(3) "123" [5]=> string(7) "as12345" } array(5) { [1]=> int(0) [2]=> int(234) [3]=> int(234) [4]=> int(123) [5]=> int(0) } NULL