1.2.829. No Reference On Left Side¶
Do not use references as the right element in an assignation.
This is the case for most situations : addition, multiplication, bitshift, logical, power, concatenation. Note that PHP won’t compile the code if the operator is a short operator (+=, .=, etc.), nor if the & is on the right side of the operator.
<?php
$b = 2;
$c = 3;
$a = &$b + $c;
// $a === 2 === $b;
$a = $b + $c;
// $a === 5
?>
See also References Explained and Operator Precedence.
1.2.829.1. Specs¶
Short name |
Structures/NoReferenceOnLeft |
Rulesets |
|
Exakat since |
0.11.5 |
PHP Version |
All |
Severity |
Critical |
Time To Fix |
Quick (30 mins) |
Precision |
Very high |
Features |
reference |
Available in |