PHP Curl Usage

Php-curl is an extension of the browser request using PHP impersonation. I only used a very simple part, some of the things to be aware of, make a record.

1. It is recommended to run under the CLI, including debugging. Running in a browser may be affected by browser cookies, such as when you have already logged in to simulate the requested site.
2. Some option notes for curl_setopt:
3. CURLOPT_RETURNTRANSFER默认是false。当设置为true时，请求后的内容就不会直接输出，而是通过curl_exec()返回。很有用。
4. CURLOPT_HEADER默认是false。当设置为true时，请求头部会输出。当cookie字段在头部返回时，就有必要将CURLOPT_HEADER设置为true了。
5. CURLOPT_SSL_VERIFYPEER默认是true，当访问https站点时，即会验证证书。在windows系统下curl一个https站点时，会提示SSL certificate problem: unable to get local issuer certificate，就有必要将CURLOPT_SSL_VERIFYPEER设置为false来方便调试了。
6. CURLOPT_SSL_VERIFYHOST默认为2，验证host名称。可设置为false，不验证。
7. CURLOPT_VERBOSE默认为false。设置为true，会打印出请求时的详细信息，当curl_exec()返回false时，将此选项开启，看详细信息，会很有用处。

For the time being used so much, 5, 7 is more useful.

Again find useful places to add, attach an example: Https://coding.net/u/imzhi/p/iMabi/git

PHP Curl Usage