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psalm/docs/running_psalm/issues/UnusedVariable.md
Bruce Weirdan e496aa406f
Documented using underscore to suppress unused(param/variable) issues (#3580)
Previously it was undocumented, as pointed out in vimeo/psalm#3574
2020-06-13 00:31:37 -04:00

314 B

UnusedVariable

Emitted when --find-dead-code is turned on and Psalm cannot find any references to a variable, once instantiated

<?php

function foo() : void {
    $a = 5;
    $b = 4;
    echo $b;
}

Can be suppressed by prefixing the variable name with an underscore:

<?php

$_a = 22;