Online PHP editor | refs for 5JNSl

<?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; }