1、global一般用在函數內,將外部變量參數傳遞至函數內部,用法爲:
<?php $name = "why"; function changeName(){ global $name; $name = "what"; } changeName(); echo "my name is " . $name . "<br/>"; ?>
注意:global後面沒有“s”,不同於$GLOBALS['a'];
global後面不能直接給變量賦值,必須另取一行給變量賦值;
1、global一般用在函數內,將外部變量參數傳遞至函數內部,用法爲:
<?php $name = "why"; function changeName(){ global $name; $name = "what"; } changeName(); echo "my name is " . $name . "<br/>"; ?>
注意:global後面沒有“s”,不同於$GLOBALS['a'];
global後面不能直接給變量賦值,必須另取一行給變量賦值;