在多行中提取bbcode属性php

<?php
function extract_bbcode_attributes($bbcode_string) {
    $attributes = [];
    preg_match_all('/\[(\w+)(.*?)\]/', $bbcode_string, $matches, PREG_SET_ORDER);

    foreach ($matches as $match) {
        $tag = $match[1];
        $atts = [];
        preg_match_all('/(\w+)="(.*?)"|(\w+)=\'(.*?)\'/', $match[2], $attr_matches, PREG_SET_ORDER);

        foreach ($attr_matches as $attr_match) {
            if (!empty($attr_match[2])) {
                $atts[$attr_match[1]] = $attr_match[2];
            } elseif (!empty($attr_match[4])) {
                $atts[$attr_match[3]] = $attr_match[4];
            }
        }

        $attributes[$tag] = $atts;
    }

    return $attributes;
}

$bbcode_example = "[img width=\"300\" height=\"200\"]http://example.com/image.jpg[/img]";
print_r(extract_bbcode_attributes($bbcode_example));
?>