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Remote Void (v2.18.5) edition

Rule is_null

Replaces is_null($var) expression with null === $var.

Warning

Using this rule is risky.

Risky when the function is_null is overridden.

Configuration

use_yoda_style

Warning

This option is deprecated and will be removed on next major version. Use yoda_style fixer instead.

Whether Yoda style conditions should be used.

Allowed types: bool

Default value: true

Examples

Example #1

Default configuration.

--- Original
+++ New
 <?php
-$a = is_null($b);
+$a = null === $b;

Rule sets

The rule is part of the following rule sets:

@PhpCsFixer:risky

Using the @PhpCsFixer:risky rule set will enable the is_null rule with the default config.

@Symfony:risky

Using the @Symfony:risky rule set will enable the is_null rule with the default config.

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