PHP实现通过正则表达式替换回调的内容标签_PHP教程

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function my_wp_plugin_tag_action($content,$tag,$function,$args = FALSE) {

// match all regular expressions

preg_match_all($tag,$content,$matches);

if (count($matches)>0) {

// filter duplicates

$matches = array_unique($matches);

// loop through

$tag_results = array();

$found_tags = array();

foreach ($matches as $idx => $match) {

//build arg array

$full_tag = array_shift($match);

//call function, adding function output and full tag text to replacement array

$tag_results[] = my_wp_plugin_buffer_func($function,$match);

$found_tags[] = $full_tag;

}

// replace all tags with corresponding text

$content = str_replace($found_tags,$tag_results,$content);

}

return $content;

}