1.2.1102. Should Preprocess Chr()¶
Replace literal chr() calls with their escape sequence.
chr() is a functioncall, that cannot be cached. It is only resolved at execution time. On the other hand, literal values are preprocessed by PHP and may be cached. This is a micro-optimisation.
<?php
// This is easier on PHP
$a = "\120\110\120\040 is great!";
// This is slow
$a = chr(80), chr(72), chr(80), chr(32), ' is great!';
// This would be the best with this example, but it is not always possible
$a = 'PHP is great!';
?>
See also Escape sequences.
1.2.1102.1. Suggestions¶
Use PHP string sequences, and skip chr() at execution time
1.2.1102.2. Specs¶
Short name |
Php/ShouldPreprocess |
Rulesets |
|
Exakat since |
1.1.9 |
PHP Version |
All |
Severity |
Minor |
Time To Fix |
Quick (30 mins) |
Precision |
Very high |
Features |
preprocess |
Examples |
|
Available in |