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php交换两个变量的值

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Release: 2016-06-06 20:14:11
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字符串$b = $a.$b;$a = substr($b,strlen($a));$b = sbustr($b,0,strlen($a));数值类型$b = $a+$b;$a = $b-$a;$b = $b-$a;任意类型list($b,$a)=array($a,$b);任意类型$a^=$b^=$a^=$b 原文地址:php交换两个变量的值, 感谢原作者分享。

字符串
$b = $a.$b;
$a = substr($b,strlen($a));
$b = sbustr($b,0,strlen($a));

数值类型
$b = $a+$b;
$a = $b-$a;
$b = $b-$a;

任意类型
list($b,$a)=array($a,$b);

任意类型
$a^=$b^=$a^=$b
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