Three methods for php to obtain webpage content

Three methods for php to obtain webpage content

This article introduces three methods for php to obtain webpage content. For more information, see. The principle of using php code to obtain a webpage: capture the content and filter it by regular expressions to obtain the desired content. The programmer home has introduced a lot about the content of regular expressions. For more information, see. Php retrieves content, Method 1, file_get_contents Php retrieves webpage content, Method 2, curl Php: Method 3: fopen-> fread-> fclose Note: 1. allow_url_fopen must be enabled when file_get_contents () and fopen () are used. Method: edit php. ini and set allow_url_fopen = On. when allow_url_fopen is disabled, the fopen () and file_get_contents () functions cannot open remote files. 2. when curl () is used, the curl must be enabled. Method: modify php in windows. ini, remove the semicolon before extension = php_curl.dll, and copy ssleay32.dll and libeay32.dll to C: \ WINDOWS \ system32. in Linux, install the curl extension.