PHP unset鍏ㄥ眬鍙橀噺杩愮敤闂璇﹁В_PHP鏁欑▼ | 甯涔嬪

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 ?PHP  
function destroy_foo() {  
global $foo;  
unset($foo);  
}  

$foo = ‘bar’;  

destroy_foo();  
echo $foo;  

?> 

杩斿洖鐨勭粨鏋滀负

bar

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 ?PHP  
function foo() {  
unset($GLOBALS['bar']);  
}  

$bar = “something”;  

foo();  
var_dump($bar);  

?> 

http://www.bkjia.com/PHPjc/445986.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/445986.htmlTechArticlePHP涓湁涓噴鏀惧彉閲忕殑璇彞鍙仛unset锛堜粠PHP4寮€濮媢nset宸茬粡涓嶅啀鏄竴涓嚱鏁颁簡锛岃€屾槸涓€涓鍙ワ級锛屽墠鍑犲ぉ鐢╱nset鐨勬椂鍊欏嚭浜嗙偣闂锛屼簬鏄妸unset闂?..