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# headers_list

(PHP 5)

headers_list -- Returns a list of response headers sent (or ready to send)

## Description

array headers_list ( void )

headers_list() will return a numerically indexed array of headers to be sent to the browser / client. To determine whether or not these headers have been sent yet, use headers_sent().

範例 1. Examples using headers_list()

`<?php /* setcookie() will add a response header on its own */ setcookie('foo', 'bar'); /* Define a custom response header This will be ignored by most clients */ header("X-Sample-Test: foo"); /* Specify plain text content in our response */ header('Content-type: text/plain'); /* What headers are going to be sent? */ var_dump(headers_list()); ?>`

this will output :

    array(4) {
      [0]=>
      string(23) "X-Powered-By: PHP/5.1.3"
      [1]=>
      string(19) "Set-Cookie: foo=bar"
      [2]=>
      string(18) "X-Sample-Test: foo"
      [3]=>
      string(24) "Content-type: text/plain"
    }

See Also: headers_sent(), header(), and setcookie().

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