Rule declare_strict_types¶
Force strict types declaration in all files.
Warning¶
Using this rule is risky¶
Forcing strict types will stop non strict code from working.
Configuration¶
preserve_existing_declaration¶
Whether existing strict_types=? should be preserved and not overridden.
Allowed types: bool
Default value: false
Examples¶
Example #1¶
Default configuration.
--- Original
+++ New
-<?php
+<?php declare(strict_types=1);
\ No newline at end of file
Example #2¶
With configuration: ['preserve_existing_declaration' => false].
--- Original
+++ New
<?php
-declare(Strict_Types=0);
+declare(strict_types=1);
Example #3¶
With configuration: ['preserve_existing_declaration' => true].
--- Original
+++ New
<?php
-declare(Strict_Types=0);
+declare(strict_types=0);
Rule sets¶
The rule is part of the following rule sets:
@PHP70Migration:risky (deprecated)
@PHP71Migration:risky (deprecated)
@PHP74Migration:risky (deprecated)
@PHP80Migration:risky (deprecated)
@PHP82Migration:risky (deprecated)
References¶
Fixer class: PhpCsFixer\Fixer\Strict\DeclareStrictTypesFixer
Test class: PhpCsFixer\Tests\Fixer\Strict\DeclareStrictTypesFixerTest
The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.