Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.
Code example #
<?php declare(strict_types = 1);
$name = 'world';
printf('%s is %d years old', $name);
Why is it reported? #
The number of format placeholders in the printf format string does not match the number of values passed. printf requires exactly as many value arguments as there are placeholders in the format string. A mismatch will result in missing values or ignored extra arguments at runtime.
In the example above, the format string '%s is %d years old' contains 2 placeholders (%s and %d), but only 1 value ($name) is provided.
How to fix it #
Pass the correct number of arguments to match the placeholders:
<?php declare(strict_types = 1);
$name = 'world';
-printf('%s is %d years old', $name);
+printf('%s is %d years old', $name, 25);
Or adjust the format string if fewer values are intended:
<?php declare(strict_types = 1);
$name = 'world';
-printf('%s is %d years old', $name);
+printf('%s says hello', $name);
How to ignore this error #
You can use the identifier argument.printf to ignore this error using a comment:
// @phpstan-ignore argument.printf
codeThatProducesTheError();You can also use only the identifier key to ignore all errors of the same type in your configuration file in the ignoreErrors parameter:
parameters:
ignoreErrors:
-
identifier: argument.printf