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<?php $array = array(1, "apples",2, "oranges",3, "plums"); // array_filter() $lambda = function( $item ) { if ( ctype_alpha($item) ) { return true; } }; $filtered = array_filter( $array, $lambda); var_dump($filtered); // using array_map() $callback = function($item) { return strtoupper($item); }; $nu = array_map( $callback, $filtered); var_dump($nu); $f = function(&$item,$key,$prefix) { $item = "$prefix: $item"; }; array_walk($nu, $f, 'phun'); var_dump($nu);
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: ctype_alpha(): Argument of type int will be interpreted as string in the future in /in/VjVA8 on line 6 Deprecated: ctype_alpha(): Argument of type int will be interpreted as string in the future in /in/VjVA8 on line 6 Deprecated: ctype_alpha(): Argument of type int will be interpreted as string in the future in /in/VjVA8 on line 6 array(3) { [1]=> string(6) "apples" [3]=> string(7) "oranges" [5]=> string(5) "plums" } array(3) { [1]=> string(6) "APPLES" [3]=> string(7) "ORANGES" [5]=> string(5) "PLUMS" } array(3) { [1]=> string(12) "phun: APPLES" [3]=> string(13) "phun: ORANGES" [5]=> string(11) "phun: PLUMS" }
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 Deprecated: ctype_alpha(): Argument of type int will be interpreted as string in the future in /in/VjVA8 on line 6 Deprecated: ctype_alpha(): Argument of type int will be interpreted as string in the future in /in/VjVA8 on line 6 Deprecated: ctype_alpha(): Argument of type int will be interpreted as string in the future in /in/VjVA8 on line 6 array(3) { [1]=> string(6) "apples" [3]=> string(7) "oranges" [5]=> string(5) "plums" } array(3) { [1]=> string(6) "APPLES" [3]=> string(7) "ORANGES" [5]=> string(5) "PLUMS" } array(3) { [1]=> string(12) "phun: APPLES" [3]=> string(13) "phun: ORANGES" [5]=> string(11) "phun: PLUMS" }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
array(3) { [1]=> string(6) "apples" [3]=> string(7) "oranges" [5]=> string(5) "plums" } array(3) { [1]=> string(6) "APPLES" [3]=> string(7) "ORANGES" [5]=> string(5) "PLUMS" } array(3) { [1]=> string(12) "phun: APPLES" [3]=> string(13) "phun: ORANGES" [5]=> string(11) "phun: PLUMS" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/VjVA8 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/VjVA8 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/VjVA8 on line 5
Process exited with code 255.
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