<?php
$a = array(3,4);
$b =& $a;
$c =& $a;
var_dump( is_same_ref( $a, $b ));
$a[] = 5;
$b[] = 6;
var_dump( implode( $a ), implode( $b ), implode( $c ));
function is_same_ref( & $a, & $b ){
// Save original values
$ori_a = $a;
$ori_b = $b;
// Give them different values
$a = 1;
$b = 2;
// Compare them, if they're equal, they are references to each other
$eq = $a === $b;
// Restore original values
$a = $ori_a;
$b = $ori_b;
return $eq;
}
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- bool(true)
string(4) "3456"
string(4) "3456"
string(4) "3456"
preferences:
297.29 ms | 405 KiB | 468 Q