1.2.31. Always Use Function With array_key_exists()¶
array_key_exists() has been granted a special virtual machine opcode, and is much faster. This applies to PHP 7.4 and more recent.
It requires that array_key_exists() is statically resolved, either with an initial \, or a use function expression. This doesn’t affect the global namespace.
This analysis is related to Php/ShouldUseFunction, and is a special case, that only concerns array_key_exists().
<?php
namespace my/name/space;
// do not forget the 'function' keyword, or it will apply to classes.
use function array_key_exists as foo; // the alias is not necessary, and may be omitted.
// array_key_exists is aliased to foo :
$c = foo($a, $b);
// This call requires a fallback to global, and will be slow.
$c = array_key_exists($a, $b);
?>
See also Add array_key_exists to the list of specially compiled functions.
1.2.31.1. Suggestions¶
Use the use command for arrray_key_exists(), at the beginning of the script
Use an initial before array_key_exists()
Remove the namespace
1.2.31.2. Specs¶
Short name |
Performances/Php74ArrayKeyExists |
Rulesets |
|
Exakat since |
1.8.4 |
PHP Version |
With PHP 7.4 and more recent |
Severity |
Minor |
Time To Fix |
Quick (30 mins) |
Precision |
Very high |
Features |
vm, opcode |
Available in |