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Digg  curl_exec
Perform a cURL session
(PHP 4 >= 4.0.2, PHP 5)
Example 430. Fetching a web page<?phpRelated Examples ( Source code ) » curl_exec Examples ( Source code ) » Feed Validator Examples ( Source code ) » Posting a file / image to twitpic.com using PHP and cUrl Code Examples / Notes » curl_execfifa_2k -at- sina -dot- com
With php 4.3.9 or higher,you can upload file to ftp server on win32 system <?php function curl_upload($src) { $fn = basename($src); $dest = "ftp://user:passwd@server.com/incoming/$fn"; $ch = curl_init(); $fp = fopen($src,"r"); curl_setopt($ch, CURLOPT_UPLOAD, 1); curl_setopt($ch, CURLOPT_TIMEOUT, 300); curl_setopt($ch, CURLE_OPERATION_TIMEOUTED, 300); curl_setopt($ch, CURLOPT_URL, $dest); curl_setopt($ch, CURLOPT_INFILE, $fp); curl_setopt($ch, CURLOPT_INFILESIZE, filesize($src)); curl_exec($ch); fclose ($fp); $errorMsg = ''; $errorMsg = curl_error($ch); $errorNumber = curl_errno($ch); curl_close($ch); return $errorNumber; } ?> lower version php (I tried on php 4.3.3) on win32 can't do this and may cause php crash even you use CURLOPT_READFUNCTION. lukasl
Thank you for sharing this. I was wondering why my result was 1. To get around this in a safe way, this is how I check if the result is valid. $ch = curl_init(); /// initialize a cURL session curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true); $xmlResponse = curl_exec ($ch); curl_close ($ch); if (!is_string($xmlResponse) || !strlen($xmlResponse)) { return $this->_set_error( "Failure Contacting Server" ); } else { return $xmlResponse; } landon
If your curl installation is not compiled with SSL support you will beat your head against a wall when trying to figure out why curl_exec() is failing to fail or do anything else ... If you run into a situation where your call to curl_exec is not returning anything you should try the same call with the command line curl jørgen tjernø
If you've got problems with curl_exec not working, you should rather check curl_errno and curl_error than using commandline curl, like so: (since this is easier, and also allows you to check for errors runtime, which is a vital part of any well-design piece of code. ;) <?php $creq = curl_init(); curl_setopt($creq, CURLOPT_URL, "http://www.foo.internal"); curl_exec($creq); /* To quote curl_errno documentation: Returns the error number for the last cURL operation on the resource ch, or 0 (zero) if no error occurred. */ if (curl_errno($creq)) { print curl_error($creq); } else { curl_close($creq); } ?> sharky
If You want to hide result which return curl_exec Use bufeered output. For example: ----------------------- $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,"http://url.com/index.php"); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, "a=3&b=5"); //--- Start buffering ob_start(); curl_exec ($ch); //--- End buffering and clean output ob_end_clean(); curl_close ($ch); ------------------ maybe it help somebody :)) ---------- Best Regards Sharky florian holzhauer
If you use apache2+mod_chroot with php5, add LoadFile /lib/libnss_dns.so.2 to your mod_chroot config - this should resolver problems. test
If you see a "0" at the end of the output, you might want to switch to HTTP/1.0: curl_setopt($ch, CURLOPT_HTTP_VERSION, 1.0); sybren
If you see a "0" at the end of the output, you might want to switch to HTTP/1.0: curl_setopt($ch, CURLOPT_HTTP_VERSION, 1.0); csaba
If you retrieve a web page and print it (so you can see it in your browser), and the page has an expiration, this expiration now applies to MyProgram.php and next time your program/page is called, even if it's grabbing a different web page, it will show what it just displayed. In Netscape you can get rid of this by going into Edit, Options, Advanced, Cache, and clear out the Disk Cache. But this is really annoying after short order. The following prevents the above scenario: <?php function GetCurlPage ($pageSpec) { $ch = curl_init($pageSpec); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $tmp = curl_exec ($ch); curl_close ($ch); // if you intend to print this page, better clear out expiration tag $tmp = preg_replace('/(?s)<meta http-equiv="Expires"[^>]*>/i', '', $tmp); return $tmp; } ?> nagyp
fyi: It returns false if there's an error while executing the curl session, no matter how CURLOPT_RETURNTRANSFER is set. ppruett
fyi - if you are having problems getting a webpage to display in your webpage with curl_setopt(CURLOPT_RETURNTRANSFER, 1); due to version bugginess perhaps, you may can use output control functions like this to show a web page inside your webpage: <html><head><title>whatever</title></head> <body> <script language="php"> $ch = curl_init("http://www.cocoavillage.com/"); // use output buffering instead of returntransfer -itmaybebuggy ob_start(); curl_exec($ch); curl_close($ch); $retrievedhtml = ob_get_contents(); ob_end_clean(); // if you intend to print this page with meta tags, better clear out any expiration tag // $result = preg_replace('/(?s)<meta http-equiv="Expires"[^>]*>/i', '', $retrievedhtml); // for now I just want what is between the body tags so need // somehow cut the header footer $bodyandend = stristr($retrievedhtml,"<body"); // not needed- $positionstartbodystring = strlen($retrievedhtml)-strlen($bodyandend); $positionendstartbodytag = strpos($bodyandend,">") + 1; // got to change all to lowercase temporarily // because end body may be upperlowercasemix // to bad strirstr does not exist $temptofindposition=strtolower($bodyandend); $positionendendbodytag=strpos($temptofindposition,"</body"); //now to get the endbetween body tags $grabbedbody=substr($bodyandend, $positionendstartbodytag, $positionendendbodytag); //be sure to fix syntax broke by display on phpwebsite... like above line print("$grabbedbody"); </script> </body></html> tada colins
Checking the source, curl_exec seems to return FALSE on failure, TRUE on success (unless CURLOPT_RETURNTRANSFER is set 1, and then it returns the returned data).
04-oct-2006 09:41
Be careful when using curl_exec() and the CURLOPT_RETURNTRANSFER option. According to the manual and assorted documentation: Set CURLOPT_RETURNTRANSFER to TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly. When retrieving a document with no content (ie. 0 byte file), curl_exec() will return bool(true), not an empty string. I've not seen any mention of this in the manual. Example code to reproduce this: <?php // fictional URL to an existing file with no data in it (ie. 0 byte file) $url = 'http://www.example.com/empty_file.txt'; $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); curl_setopt($curl, CURLOPT_HEADER, false); // execute and return string (this should be an empty string '') $str = curl_exec($curl); curl_close($curl); // the value of $str is actually bool(true), not empty string '' var_dump($str); ?> cameron
A slightly more efficient way to return the HTTP code would be to use the curl_getinfo function function getHttpResponseCode($url) { $ch = @curl_init($url); @curl_setopt($ch, CURLOPT_HEADER, TRUE); @curl_setopt($ch, CURLOPT_NOBODY, TRUE); @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE); @curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); $status = array(); $status = @curl_getinfo($ch); return $status['http_code']; } shanto
A function to retrieve the status code of an HTTP request using CURL: function getHttpResponseCode($url) { $ch = @curl_init($url); @curl_setopt($ch, CURLOPT_HEADER, TRUE); @curl_setopt($ch, CURLOPT_NOBODY, TRUE); @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE); @curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); $status = array(); $response = @curl_exec($ch); preg_match('/HTTP\/.* ([0-9]+) .*/', $response, $status); return $status[1]; } |
