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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);

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