<?xml version="1.0"?>
<documentation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="https://phpcsstandards.github.io/PHPCSDevTools/phpcsdocs.xsd"
title="Foreach Unique Assignment"
>
<standard>
<![CDATA[
When a foreach control structure uses the same variable for both the $key as well as the $value assignment, the key will be disregarded and be inaccessible and the variable will contain the value.
Mix in reference assignments and the behaviour becomes even more unpredictable.
This is a coding error. Either use unique variables for the key and the value or don't assign the key.
]]>
</standard>
<code_comparison>
<code title="Valid: using unique variables.">
<![CDATA[
foreach ($array as $k => $v ) {}
]]>
</code>
<code title="Invalid: using the same variable for both the key as well as the value.">
<![CDATA[
foreach ($array as $k => $k ) {}
]]>
</code>
</code_comparison>
</documentation>
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