What is not found in php information collection? How to solve

What is not found in php information collection? Today, I suddenly wanted to collect something. it was okay at the beginning. everything was normal. but after a while, I couldn't collect anything. I don't know where the problem is. the code is as follows. please ask? Function & nbsp; getContent ($ url) & nbsp ;{& nbsp; & nbsp; what content cannot be found in php information collection?
Today, I suddenly wanted to collect something. it was okay at the beginning. everything was normal. but after a while, I couldn't collect anything. I don't know where the problem is. the code is as follows. please ask?
Function getContent ($ url ){
$ Url = trim ($ url );
$ Content = '';
If (extension_loaded ('curl ')){
$ Ch = curl_init ();
Curl_setopt ($ ch, CURLOPT_URL, $ url );
Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1 );
Curl_setopt ($ ch, CURLOPT_FOLLOWLOCATION, 1 );
Curl_setopt ($ ch, CURLOPT_HEADER, 0 );
Curl_setopt ($ ch, CURLOPT_HTTPHEADER, array (
'Accept-Language: zh-cn ',
'Connection: Keep-alive ',
'Cache-Control: no-cache'
));
$ User_agent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1 )";
Curl_setopt ($ ch, CURLOPT_USERAGENT, $ user_agent );
$ Content = curl_exec ($ ch );
Curl_close ($ ch );
} Else {
$ Content = file_get_contents ($ url );
}
Return trim ($ content );

} // End func getContent (); PHP Curl information collection simulated browser acquisition shared:
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What is the url you collected?
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