Editing Foreach loop (section)

=== PHP ===
{{Main|PHP syntax and semantics}}
<syntaxhighlight lang="php">
foreach ($set as $value) {
    // Do something to $value;
}
</syntaxhighlight>

It is also possible to extract both keys and values using the alternate syntax:

<syntaxhighlight lang="php">
foreach ($set as $key => $value) {
    echo "{$key} has a value of {$value}";
}
</syntaxhighlight>

Direct modification of collection members:

<syntaxhighlight lang="php">
$arr = array(1, 2, 3);
foreach ($arr as &$value) { // The &, $value is a reference to the original value inside $arr
    $value++;
}
// Now $arr = array(2, 3, 4);

// also works with the full syntax
foreach ($arr as $key => &$value) {
    $value++;
}
</syntaxhighlight>
* [https://php.net/foreach More information]