', $idx + 1);
if ($lidx === false) {
return $content;
}
return substr_replace($content, $code, $lidx + 1, 0);
}
/**
* Add attributes to the offset'th specified tag
*
* @param string $content
* @param string $tag
* @param string $attr_str
* @param int $offset
* @return string new content with added attributes
*/
public static function add_attrs_to_tag($content, $tag, $attr_str, $offset = 0)
{
$tag = '<' . $tag;
$idx = strpos($content, $tag, $offset);
if ($idx === false) {
return $content;
}
return substr_replace($content, $tag . " " . $attr_str." ", $idx, strlen($tag) + 1);
}
/**
* Replace attributes of the offset'th specified tag
*
* @param string $content
* @param string $tag
* @param string $attr_str
* @param int $offset
* @return string new content with added attributes
*/
public static function replace_attrs_of_tag($content, $tag, $attr_str, $offset = 0)
{
$tag = '<' . $tag;
$fidx = strpos($content, $tag, $offset);
if ($fidx === false) {
return $content;
}
$lidx = strpos($content, '>', $fidx);
if ($lidx === false) {
return $content;
}
return substr_replace($content, $tag . " " . $attr_str . ">", $fidx, $lidx - $fidx + 1);
}
/**
* Replace closing of the offset'th specified tag
*
* @param string $content
* @param string $tag
* @param string $replacement
* @param int $offset
* @return string new content with added attributes
*/
public static function replace_closing_tag($content, $tag, $replacement, $offset = -1)
{
$tag = '';
$idx = strrpos($content, $tag, $offset);
if ($idx === false) {
return $content;
}
return substr_replace($content, $replacement, $idx, strlen($tag));
}
/**
* Append attribute value to the offset'th specified tag
* ->
*
* @param string $content
* @param string $tag
* @param string $add
* @param string $attr
* @param int $offset
* @return string new content with added classes
*/
public static function append_attr_value($content, $tag, $add, $attr, $offset = 0, &$cursor = false)
{
$idx = strpos($content, '<' . $tag, $offset);
if ($idx === false) {
return $content;
}
$lidx = strpos($content, '>', $idx + 1);
if ($lidx === false) {
return $content;
}
$cursor = $lidx;
$tagDes = substr($content, $idx, $lidx - $idx);
$count = 0;
$tagDes = preg_replace("/$attr=\"(.*)\"/", "$attr=\"$1" . $add . "\"", $tagDes, -1, $count);
if ($count == 0) {
$tagDes = substr_replace($tagDes, " $attr=\"$add\"", strlen($tag) + 1, 0);
}
return substr_replace($content, $tagDes, $idx, $lidx - $idx);
}
}