| public setChannelAbout ( string $url ) : self | ||
| $url | string | value of 'rdf:about' attribute of the channel element |
| return | self | |
public function setChannelAbout($url)
{
if ($this->version != Feed::RSS1) {
throw new InvalidOperationException("This method is only supported in RSS1 feeds.");
}
if (empty($url)) {
throw new \InvalidArgumentException('The about URL may not be empty or NULL.');
}
if (!is_string($url)) {
throw new \InvalidArgumentException('The about URL must be a string.');
}
$this->data['ChannelAbout'] = $url;
return $this;
}