1.2.622. Is_A() With String¶

When using is_a() with a string as first argument, the third argument is compulsory. The third argument is $allow_string, and is necessary to work on strings.

<?php

// is_a() works with string as first argument, when the third argument is 'true'
if (is_a('A', 'B', true)) {}

// is_a() works with object as first argument
if (is_a(new A, 'A')) {}
?>

See also is_a.

1.2.622.1. Connex PHP features¶

class

interface

1.2.622.1.1. Suggestions¶

Add the third argument, and set it to true
Use an object as a first argument

1.2.622.1.2. Specs¶

Short name	Php/IsAWithString
Rulesets	All, Analyze, CE, CI-checks, Changed Behavior, Rector
Exakat since	1.9.9
PHP Version	All
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	High
Available in	Entreprise Edition, Community Edition, Exakat Cloud