Question

php中怎样自定义函数改变数组的值?

为什么这样写改变不了呢？
$table_exchange=array(1,2,3,4,5,6,7,8);

NumChange($table_exchange);

function NumChange($num){

foreach ($num as $b=>$c){

$num[$b]="Week_".$c;

}

}

echo $table_exchange[0];
求指教～

Answer 1

传引用即可，例子代码：

<?php 
$table_exchange=array(1,2,3,4,5,6,7,8);
NumChange($table_exchange);
print_r($table_exchange);
echo $table_exchange[0];

function NumChange(&$num){
	foreach ($num as $b=>$c){
		$num[$b]="Week_".$c;
	}
}
?>