<?xml version="1.0"?>
<documentation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="https://phpcsstandards.github.io/PHPCSDevTools/phpcsdocs.xsd"
    title="Comma Spacing"
    >
    <standard>
    <![CDATA[
    There should be no space before a comma and exactly one space, or a new line, after a comma.

    The sniff makes the following exceptions to this rule:
    1. A comma preceded or followed by a parenthesis, curly or square bracket.
       These will not be flagged to prevent conflicts with sniffs handling spacing around braces.
    2. A comma preceded or followed by another comma, like for skipping items in a list assignment.
       These will not be flagged.
    3. A comma preceded by a non-indented heredoc/nowdoc closer.
       In that case, unless the `php_version` config directive is set to a version higher than PHP 7.3.0,
       a new line before will be enforced to prevent parse errors on PHP < 7.3.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: Correct spacing.">
        <![CDATA[
isset($param1<em>, </em>$param2<em>, </em>$param3);

function_call(
    $param1<em>,</em>
    $param2<em>,</em>
    $param3
);

$array = array($item1<em>, </em>$item2<em>, </em>$item3);
$array = [
    $item1<em>,</em>
    $item2<em>,</em>
];

list(, $a<em>, </em>$b<em>,</em>,) = $array;
list(
    ,
    $a<em>,</em>
    $b<em>,</em>
) = $array;
        ]]>
        </code>
        <code title="Invalid: Incorrect spacing.">
        <![CDATA[
unset($param1<em>  ,   </em>$param2<em>,</em>$param3);

function_call(
    $a
    <em>,</em>$b
    <em>,</em>$c
);

$array = array($item1<em>,</em>$item2<em>  ,  </em>$item3);
$array = [
    $item1,
    $item2<em>  ,</em>
];

list( ,$a, $b<em>  ,</em>,) = $array;
list(
    ,
    $a,
    $b<em>  ,</em>
) = $array;
        ]]>
        </code>
    </code_comparison>
    <standard>
    <![CDATA[
    A comma should follow the code and not be placed after a trailing comment.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: Comma after the code.">
        <![CDATA[
function_call(
    $param1<em>,</em> // Comment.
    $param2<em>,</em> /* Comment. */
);
        ]]>
        </code>
        <code title="Invalid: Comma after a trailing comment.">
        <![CDATA[
function_call(
    $param1 // Comment.
    <em>,</em>
    $param2 /* Comment. */<em>,</em>
);
        ]]>
        </code>
    </code_comparison>
</documentation>