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java软件工程师学php -13. 值传递与引用传递

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Release： 2016-06-13 10:50:03
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java程序员学php -13. 值传递与引用传递
php和Java一样，调用函数时，基本数据类型用值传递，对象用引用传递

但php也可以传递基本数据类型的引用(用&符号): 

$w = 65; function change_it(&$weight){   $weight = 60;}change_it($w);echo $w; //60
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