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Returns a list of response headers sent (or ready to send) (PHP 5)
array headers_list ( )

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

Return Values

Returns a numerically indexed array of headers.


Example 1602. Examples using headers_list()


/* 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? */


The above example will output:

array(4) {
 string(23) "X-Powered-By: PHP/5.1.3"
 string(19) "Set-Cookie: foo=bar"
 string(18) "X-Sample-Test: foo"
 string(24) "Content-type: text/plain"