PHP - Swap The Values of 2 Variables Without Temp Variable 2023
By XiaoXin
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Main Contents
// 1 list($a, $b) = array($b, $a);
// 2 $a = $a . $b;
$b = strlen($b);
$b = substr ($a, 0, (strlen($a) – $b));
$a = substr ($a, strlen($b));
// 3 (Must use a character that cannot appear in both strings as a separator)
$a = $b .','. $a;
$a = explode (',', $a);
$b = $a[1];
$a = $a[0];
// 4 This is when both numbers are numbers:
$a = $a + $b;
$b = $a – $b;
$a = $a – $b;
// 5 with array
$a = array ($a, $b);
$b = $a[0];
$a = $a[1]; Continuing...
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