PHP headers_list() function

Author：Eve Cole Update Time：2025-01-02 19:36:01

Definition and usage

The headers_list() function returns a list of sent (or pending) response headers.

This function returns an array containing headers.

grammar

 headers_list()

Tips and Notes

Tip: To determine whether headers have been sent, use the headers_sent() function.

Example 1

 <?phpsetcookie("TestCookie","SomeValue"');header("X-Sample-Test: foo");header('Content-type: text/plain');?><html><body><? php// What headers are to be sent?var_dump(headers_list());?></body></html>

The above code will output:

 array(4){[0]=> string(23) "X-Powered-By: PHP/5.1.1"[1]=> string(19) "Set-Cookie: TestCookie=SomeValue"[2]=> string(18) "X-Sample-Test: foo"[3]=> string(24) "Content-type: text/plain"}