Question about the url intercepted by php from a string

Hello, the question of intercepting URLs from strings in php is: first, I won't use php, but I hope you can solve this problem for me, thank you very much for calling a string $ longurl from a php program. The result of $ longurlecho is www.csdn.net/123456<ahref=http://www. question about intercepting URLs from strings in php
Hello everyone. First of all, I don't know php, but I hope you can solve this problem for me. thank you very much.

I call a string $ longurl from a php program

The result of the $ longurl echo is
Www.csdn.net/123456click here

How can I intercept the section www.csdn.net/123456?

What I found online is

$ Aa = $ longurl;
Preg_match ("/http [^ \"] */", $ aa, $ bb );
Echo $ bb [0];

However, in the next program, I want to shorten the Baidu short URL api

Program is

$ Urlbd = '$ bb [0]';
$ Result = getBaiduShortUrl ($ urlbd );
If ($ result ){
Echo 'success: '. $ result;
} Else {
Die ('failed ');
}

Function getBaiduShortUrl ($ urlbd ){
$ Data = array (
'URL' => $ urlbd,
);
$ Baidu_url = 'http: // dwz.cn/create.php ';
$ Ret = postData ($ baidu_url, $ data );
If ($ ret ){
$ Ret = json_decode ($ ret, true );
If ($ ret ['status']! = 0 ){
Return false;
} Else {
Return $ ret ['tinyurl'];
}
} Else {
Return false;
}
}


Function postData ($ urlbd, $ data ){
$ Options = array (
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HEADER => false,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_ENCODING => 'gzip, deflate, sdch ',
CURLOPT_USERAGENT => 'mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.1 (KHTML, like Gecko) Ubuntu/11.10 Chromium/14.0.835.202 Chrome/14.0.835.202 Safari/80 ',
CURLOPT_AUTOREFERER => true,
CURLOPT_CONNECTTIMEOUT = & gt; 120,
CURLOPT_TIMEOUT => 120,
CURLOPT_MAXREDIRS => 10,
CURLOPT_REFERER => 'http: // www.baidu.com /',
CURLOPT_POSTFIELDS => $ data,
);

$ Ch = curl_init ($ urlbd );
Curl_setopt_array ($ ch, $ options );
$ Content = curl_exec ($ ch );
$ Err = curl_errno ($ ch );
$ Errmsg = curl_error ($ ch );
$ Header = curl_getinfo ($ ch );
Curl_close ($ ch );

Return $ content;
}


What's wrong with the shortened address? could you please help me check it out?


------ Solution --------------------
You cannot get the regular expression you want, and $ urlbd = '$ bb [0]'. you define $ urlbd as a string of $ bb [0 ].
You must use double quotation marks to replace the variables in the parsing with the following
Preg_match ("/] *>. * <\/a>/I", $ aa, $ bb );
$ Urlbd = $ bb [1];
------ Solution --------------------
Just now csdn has crashed again.

How can I intercept the section www.csdn.net/123456?

Click here from www.csdn.net/123456.
Extract www.csdn.net/123456?

If so, there are many methods to shorten the website. I don't know if there are any other Web sites. do this for the time being?
$ Str = 'www .csdn.net/123456 ';
Preg_match ('/^ ([a-z \ d \. \/] +) $ urlStr = $ match [1];
Echo $ urlStr;
Result
Www.csdn.net/123456

------ Solution --------------------
Www.csdn.net/123456click here
To intercept all the characters $ s1, use $ strArray = explode ("------ solution --------------------
I mean:
I call a string $ longurl from a php program

The result of the $ longurl echo is
Www.csdn.net/123456click here
Are the $ longurl strings in this rule {url address! If yes, you can use the php string separation function to separate it, and then return an array:
$ StrArray = explode ("print_r ($ strArray );

What is the result?