Comparison of file_get_contents with curl in PHP _ PHP Tutorial

In PHP, file_get_contents compares the performance efficiency with curl. In PHP, file_get_contents compares the curl performance efficiency. This article describes how to compare file_get_contents with curl in php. The article content is organized from the network. if there is an incorrect PHP file, file_get_contents compares the performance efficiency with curl.

This article describes how to compare file_get_contents performance with curl in php. The content of the article is organized on the internet. if any of the content is incorrect, you can leave a message to correct it.

(1) each time fopen/file_get_contents requests data from the remote URL, it re-queries the DNS and does not cache the DNS information. However, CURL automatically caches DNS information. Only one DNS query is required for a webpage or image request under the same domain name. This greatly reduces the number of DNS queries. Therefore, CURL performance is much better than fopen/file_get_contents.

(2) when requesting HTTP, fopen/file_get_contents uses http_fopen_wrapper instead of keeplive. But curl does. In this way, curl is more efficient when multiple links are requested. (Set the header)

(3) the fopen/file_get_contents function will be affected by the allow_url_open option configuration in the php. ini file. If this configuration is disabled, the function becomes invalid. Curl is not affected by this configuration.

(4) curl can simulate multiple requests, such as POST data and form submission. Users can customize requests as needed. Fopen/file_get_contents can only get data.

(5) fopen/file_get_contents cannot download the binary file correctly.

(6) fopen/file_get_contents cannot correctly process ssl requests.

(7) multiple threads can be used for curl.

(8) when file_get_contents is used, if there is a network problem, it is easy to accumulate some processes here.

(9) If a persistent connection is to be established, multiple pages are requested. Then file_get_contents will have problems. The obtained content may also be incorrect. Therefore, it is a correct choice to use curl for replacement when doing similar collection work.

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In this article, I will share some comparisons on the performance efficiency of file_get_contents in curl in php. The content of the article is organized on the network. if there is any incorrect content...