Rule string_length_to_empty¶
String tests for empty must be done against '', not with strlen.
Warning¶
Using this rule is risky¶
Risky when strlen is overridden, when called using a stringable object,
also no longer triggers warning when called using non-string(able).
Examples¶
Example #1¶
--- Original
+++ New
-<?php $a = 0 === strlen($b) || \STRLEN($c) < 1;
+<?php $a = '' === $b || $c === '';
Rule sets¶
The rule is part of the following rule sets:
References¶
Fixer class: PhpCsFixer\Fixer\StringNotation\StringLengthToEmptyFixer
Test class: PhpCsFixer\Tests\Fixer\StringNotation\StringLengthToEmptyFixerTest
The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.