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MixedAssignment.md

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MixedAssignment

Emitted when assigning an unannotated variable to a value for which Psalm cannot infer a type more specific than mixed.

<?php

$a = $GLOBALS['foo'];

How to fix

The above example can be fixed in a few ways – by adding an assert call:

<?php

$a = $GLOBALS['foo'];
assert(is_string($a));

or by adding an explicit cast:

<?php

$a = (string) $GLOBALS['foo'];

or by adding a docblock

<?php

/** @var string */
$a = $GLOBALS['foo'];