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27 lines
464 B
Markdown
27 lines
464 B
Markdown
# UnusedClosureParam
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Emitted when `--find-dead-code` is turned on and Psalm cannot find any uses of a particular parameter in a closure.
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```php
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<?php
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$a = function (int $a, int $b) : int {
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return $a + 4;
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};
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/**
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* @param callable(int,int):int $c
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*/
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function foo(callable $c) : int {
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return $c(2, 4);
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}
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```
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Can be suppressed by prefixing the parameter name with an underscore:
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```php
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$f = function (int $_a, int $b) : int {
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return $b + 4;
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};
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```
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