Data Transfer Curl Instance analysis in PHP

This article mainly introduces data transfer Curl example analysis in PHP, interested friends, I hope to help you.

Verify that the curl extension is installed

Linux under command:

[Root@fengniu020 ~]# Php-i | Grep-i curladditional. ini files parsed =/etc/php.d/curl.ini,curlcurl support = Enabledcurl information = 7. 19.7

Curl Operation Step Parsing:

Curl Instance

1. A simple curl, crawl Baidu homepage

2. Download a webpage and replace "Baidu" in the content with "ferry" after output

3. Call WebService

A simple curl, crawl Baidu homepage

<?php$curl=curl_init (' http://www.jb51.net '); curl_exec ($curl); Curl_close ($curl);? >

Download a webpage and replace "Baidu" in the content with "ferry" after output

<?php/** * Example Description: Download a webpage on the network and replace "Baidu" in the content with "ferry" after output */$curlobj = Curl_init ();      Initialize curl_setopt ($curlobj, Curlopt_url, "http://www.baidu.com");    Set the Urlcurl_setopt ($curlobj, Curlopt_returntransfer, true) to access the Web page;      Do not print directly after execution $output=curl_exec ($curlobj); Executive Curl_close ($curlobj);     Close Curlecho str_replace ("Baidu", "Ferry", $output); >

Call WebService

<?php/** * Example Description: By calling WebService query Beijing's current weather * below interface, free users within 24 hours of access is limited, need to store information */$data = ' thecityname= Beijing ';//$data = ' Thecityname= Beijing & ';//Multiple connections with & $curlobj = Curl_init ();  curl_setopt ($curlobj, Curlopt_url, "http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getWeatherbyCityName"); curl_setopt ($curlobj, Curlopt_header, 0); curl_setopt ($curlobj, Curlopt_returntransfer, 1); curl_setopt ($curlobj, Curlopt_post, 1); Post mode curl_setopt ($curlobj, Curlopt_postfields, $data); curl_setopt ($curlobj, Curlopt_httpheader, Array ("application/x-www-form-urlencoded; Charset=utf-8 ",   " Content-length: ". strlen ($data))  ); HTTP Request Header curl_setopt ($curlobj, curlopt_useragent, $_server[' http_user_agent '); $rtn = Curl_exec ($curlobj);  if (!curl_errno ($curlobj)) {  //$info = Curl_getinfo ($curlobj);   Print_r ($info);  Echo $rtn; } else {echo ' Curl error: '. Curl_error ($curlobj);} Curl_close ($curlobj);? >

Download a file from the FTP server to a local

<?php/** * Code Instance-php-curl actual Combat * Example Description: Download a file from the FTP server to local */$curlobj = Curl_init ();  curl_setopt ($curlobj, Curlopt_url, "ftp://192.168.1.100/downloaddemo.txt"); curl_setopt ($curlobj, Curlopt_header, 0); curl_setopt ($curlobj, Curlopt_returntransfer, 1); curl_setopt ($curlobj, Curlopt_timeout, 300); Times out after 300scurl_setopt ($curlobj, Curlopt_userpwd, "peter.zhou:123456");//ftp user name: Password//sets up the output file$ outfile = fopen (' dest.txt ', ' WB ');//Save to local file name curl_setopt ($curlobj, Curlopt_file, $outfile); $rtn = Curl_exec ($curlobj) ; Fclose ($outfile); if (!curl_errno ($curlobj)) {  //$info = Curl_getinfo ($curlobj);   Print_r ($info);  echo "RETURN:". $rtn; } else {echo ' Curl error: '. Curl_error ($curlobj);} Curl_close ($curlobj);? >

Upload the local file to the FTP server

<?php/** * Code Instance-php-curl actual Combat * Example Description: Upload the local file to the FTP server */$curlobj = Curl_init ();  $localfile = ' ftp01.php ';//file to be uploaded $fp = fopen ($localfile, ' R '); curl_setopt ($curlobj, Curlopt_url, "ftp:// 192.168.1.100/ftp01_uploaded.php ");//File name curl_setopt ($curlobj, Curlopt_header, 0) after uploading; curl_setopt ($curlobj, Curlopt_returntransfer, 1); curl_setopt ($curlobj, Curlopt_timeout, 300); Times out after 300scurl_setopt ($curlobj, Curlopt_userpwd, "peter.zhou:123456");//ftp user name: Password curl_setopt ($curlobj, Curlopt_upload, 1); curl_setopt ($curlobj, Curlopt_infile, $fp);//Transfer Open File curl_setopt ($curlobj, Curlopt_infilesize, FileSize ($localfile));//upload file size $rtn = curl_exec ($curlobj); Fclose ($FP); if (!curl_errno ($curlobj)) {  echo "uploaded successfully.";} else {echo ' Curl Error: '. Curl_error ($curlobj);} Curl_close ($curlobj);? >

Download an HTTPS resource above the network

<?php/** * Code Instance-php-curl actual Combat * Example Description: Download an HTTPS resource above the network */$curlobj = Curl_init ();      Initialize curl_setopt ($curlobj, Curlopt_url, "https://ajax.aspnetcdn.com/ajax/jquery.validate/1.12.0/ Jquery.validate.js ");    Set the Urlcurl_setopt ($curlobj, Curlopt_returntransfer, true) to access the Web page;      Do not print directly after execution//set HTTPS support Date_default_timezone_set (' PRC '); When using cookies, you must first set the time zone curl_setopt ($curlobj, Curlopt_ssl_verifypeer, 0); Check the origin of the certificate verify that the SSL encryption algorithm exists from the certificate, set to 0 to terminate the validation from the server curl_setopt ($curlobj, Curlopt_ssl_verifyhost, 2); $output =curl_exec ($curlobj); Executive Curl_close ($curlobj);     Close Curlecho $output;? >

Summary: The above is the entire content of this article, I hope to be able to help you learn.