PHP Array function Array_walk Usage example, array array_walk_php tutorial

PHP Array function Array_walk Usage example, array array_walk

This article describes the use of PHP array function array_walk. Share to everyone for your reference, as follows:

$words =array ("l" = "lemon", "o" = "Orange", "b" = "banana", "a" and "apple");//define a callback function, output array element function words _print ($value, $key, $prefix) {  echo ' $prefix: $key + $value
\ n ";} Defines a callback function that directly alters the value of the element function Words_alter (& $value, $key) {  $value =ucfirst ($value);  $key =strtoupper (key);} The value of the output element Array_walk ($words, ' words_print ', ' words ');//Change the value of the element Array_walk ($words, ' words_alter '); echo "
";p Rint_r ($words); echo"
";

Class Internal invocation Example:

Class Arraywalk {  /**  * Properties:  *  /var $body _chunk = Array (' 0 ' = ' dewen ', ' 1 ' = ' PHP ', 2=> ' Linux ');  //VARIABLE METHODS  //////////////////////////////////  function Arraywalk () {  }  function Func_1 () {  print_r ($this->body_chunk);  Array_walk ($this->body_chunk, Array ($this, ' spellstrtolower '));  Print_r ($this->body_chunk);  }  Function Spellstrtolower (& $str) {    $str = Strtolower ($STR);  }} $obj = new Arraywalk (); Echo '
'; $obj->func_1 (); Echo '
';

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I hope this article is helpful to you in PHP programming.

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