1.2.1352. Use is_countable¶
is_countable() checks if a variables holds a value that can be counted. It is recommended to use it before calling count().
is_countable() accepts arrays and object whose class implements `countable <https://www.php.net/countable>`_.
<?php
function foo($arg) {
if (!is_countable($arg)) {
// $arg cannot be passed to count()
return 0
}
return count($arg);
}
function bar($arg) {
if (!is_array($arg) and !$x instanceof \Countable) {
// $arg cannot be passed to count()
return 0
}
return count($arg);
}
?>
See also PHP RFC: is_countable.
1.2.1352.1. Suggestions¶
Use is_countable()
Create a compatibility function that replaces is_countable() until the code is ready for PHP 7.3
1.2.1352.2. Specs¶
Short name |
Php/CouldUseIsCountable |
Rulesets |
|
Exakat since |
1.3.8 |
PHP Version |
With PHP 7.3 and more recent |
Severity |
|
Time To Fix |
|
Precision |
High |
Features |
array, countable |
Available in |