The difference in usage between global and $GLOBALS[] in php_PHP tutorial

global and $GLOBALS[] are relatively common global variables in PHP. Let’s show you a simple example to distinguish the usage of global and $GLOBALS[].

According to the official explanation:

1.$GLOBALS['var'] is the external global variable itself.

} test();

The code is as follows

代码如下	复制代码
$var1 = 1; function test(){ unset($GLOBALS['var1']); } test(); echo $var1; ?>

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$var1 = 1;

function test(){

代码如下	复制代码
$globalStr = '.com'; function globalTest(){ global $globalStr; $globalStr = 'coderbolg'.$globalStr; unset($globalStr); } globalTest(); echo $globalStr; //输入: coderbolg.com

​​ unset($GLOBALS['var1']);  

echo $var1;

?>

2.global $var is a reference or pointer of the same name as an external $var.

The code is as follows

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$globalStr = '.com'; function globalTest(){ global $globalStr; $globalStr = 'coderbolg'.$globalStr; unset($globalStr); } globalTest(); echo $globalStr; //Input: coderbolg.com http://www.bkjia.com/PHPjc/629047.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629047.htmlTechArticleglobal and $GLOBALS[] are relatively common global variables in php. Let’s show you a simple example below. , let’s differentiate between the usage of global and $GLOBALS[]. According to the official explanation: 1.$...