array_walk用法示例

$words=array("l"=>"lemon","o"=>"orange","b"=>"banana","a"=>"apple"); //定义一个回调函数，输出数组元素 function words_print($value,$key,$prefix){ echo "$prefix:$key=>$value<br>\n"; } //定义一个回调函数直接改变元素的值 function words_alter(&$value,$key){ $value=ucfirst($value); $key=strtoupper(key); } //输出元素的值 array_walk($words,'words_print','words'); //改变元素的值 array_walk($words,'words_alter'); echo "<pre>"; print_r($words); echo "</pre>"; 

类内部调用示例

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);}}$obj = new ArrayWalk();echo '<PRE>';$obj->func_1();echo '</PRE>';