Parse Wordpress like Shortcode

Question

I want to parse shortcode like Wordpress with attributes:

Input:

[include file="header.html"]

I need output as array, function name "include" and attributes with values as well , any help will be appreciated.

Thanks

Answer 1

Here's a utility class that we used on our project It will match all shortcodes in a string (including html) and it will output an associative array including their name, attributes and content

final class Parser {

    // Regex101 reference: https://regex101.com/r/pJ7lO1
    const SHORTOCODE_REGEXP = "/(?P<shortcode>(?:(?:\\s?\\[))(?P<name>[\\w\\-]{3,})(?:\\s(?P<attrs>[\\w\\d,\\s=\\\"\\'\\-\\+\\#\\%\\!\\~\\`\\&\\.\\s\\:\\/\\?\\|]+))?(?:\\])(?:(?P<content>[\\w\\d\\,\\!\\@\\#\\$\\%\\^\\&\\*\\(\\\\)\\s\\=\\\"\\'\\-\\+\\&\\.\\s\\:\\/\\?\\|\\<\\>]+)(?:\\[\\/[\\w\\-\\_]+\\]))?)/u";

    // Regex101 reference: https://regex101.com/r/sZ7wP0
    const ATTRIBUTE_REGEXP = "/(?<name>\\S+)=[\"']?(?P<value>(?:.(?![\"']?\\s+(?:\\S+)=|[>\"']))+.)[\"']?/u";

    public static function parse_shortcodes($text) {
        preg_match_all(self::SHORTOCODE_REGEXP, $text, $matches, PREG_SET_ORDER);
        $shortcodes = array();
        foreach ($matches as $i => $value) {
            $shortcodes[$i]['shortcode'] = $value['shortcode'];
            $shortcodes[$i]['name'] = $value['name'];
            if (isset($value['attrs'])) {
                $attrs = self::parse_attrs($value['attrs']);
                $shortcodes[$i]['attrs'] = $attrs;
            }
            if (isset($value['content'])) {
                $shortcodes[$i]['content'] = $value['content'];
            }
        }

        return $shortcodes;
    }

    private static function parse_attrs($attrs) {
        preg_match_all(self::ATTRIBUTE_REGEXP, $attrs, $matches, PREG_SET_ORDER);
        $attributes = array();
        foreach ($matches as $i => $value) {
            $key = $value['name'];
            $attributes[$i][$key] = $value['value'];
        }
        return $attributes;
    }
}

print_r(Parser::parse_shortcodes('[include file="header.html"]'));

Output:

Array
(
    [0] => Array
        (
            [shortcode] => [include file="header.html"]
            [name] => include
            [attrs] => Array
                (
                    [0] => Array
                        (
                            [file] => header.html
                        )
                )
        )
)

Answer 2

Using this function

$code = '[include file="header.html"]';
$innerCode = GetBetween($code, '[', ']');
$innerCodeParts = explode(' ', $innerCode);

$command = $innerCodeParts[0];

$attributeAndValue = $innerCodeParts[1];
$attributeParts = explode('=', $attributeAndValue);
$attribute = $attributeParts[0];
$attributeValue = str_replace('"', '', $attributeParts[1]);

echo $command . ' ' . $attribute . '=' . $attributeValue;
//this will result in include file=header.html

$command will be "include"

$attribute will be "file"

$attributeValue will be "header.html"