How to clear the bomber head by php

Editor to share with you how to remove php bom headers, I believe that most people do not know much, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Php clears bom headers: 1. Use "trim ($result,"\ xEF\ xBB\ xBF ");" remove BOM headers; 2, remove BOM headers through "@ iconv (" GBK "," UTF-8//IGNORE ", $result); and" remove BOM headers. "

This article operating environment: Windows7 system, PHP7.1 version, Dell G3 computer

The method of removing BOM head by PHP

The BOM header is UTF-8 to tell the editor: I am UTF8 code. Its code is\ xEF\ xBB\ xBF

However, PHP did not consider the problem of BOM header at the beginning of its design, so it is easy to have problems in encoding and decoding.

For example, the problem encountered today is json_decode. When the decoded string has a BOM header, the json_decode fails parsing and returns NULL. Why not automatically detect and remove BOM headers. A little complaint)

Tried two ways to get rid of:

$result = trim ($result, "\ xEF\ xBB\ xBF"); print_r (json_decode ($result, true)); exit

There is also a comparison:

$result = @ iconv ("UTF-8", "GBK//IGNORE", $result); $result = @ iconv ("GBK", "UTF-8//IGNORE", $result); print_r (json_decode ($result, true)); exit; above is all the content of the article "how php clears the bom head". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!