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PHP不借助第三个变量交换值_php不借助弟3个变量使两个变量交换值-CSDN博客

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//方法一: $a = "abc"; $b= "def"; $a = $a^$b; $b = $b^$a; $a = $a^$b; //方法二: list($a, $b) = array($b, $a); //方法三: $a = $a . $b; $b = strlen( $b );_php不借助弟3个变量使两个变量交换值