PHP: $http_response_header - Manual (original) (raw)
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12 years ago
Note that the HTTP wrapper has a hard limit of 1024 characters for the header lines.
Any HTTP header received that is longer than this will be ignored and won't appear in $http_response_header.
The cURL extension doesn't have this limit.
http_fopen_wrapper.c: #define HTTP_HEADER_BLOCK_SIZE 102410 years ago
parser function to get formatted headers (with response code)
<?php
function parseHeaders( $headers )
{
$head = array();
foreach( <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>h</mi><mi>e</mi><mi>a</mi><mi>d</mi><mi>e</mi><mi>r</mi><mi>s</mi><mi>a</mi><mi>s</mi></mrow><annotation encoding="application/x-tex">headers as </annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.6944em;"></span><span class="mord mathnormal">h</span><span class="mord mathnormal">e</span><span class="mord mathnormal">a</span><span class="mord mathnormal">d</span><span class="mord mathnormal">ers</span><span class="mord mathnormal">a</span><span class="mord mathnormal">s</span></span></span></span>k=>$v )
{
<span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>t</mi><mo>=</mo><mi>e</mi><mi>x</mi><mi>p</mi><mi>l</mi><mi>o</mi><mi>d</mi><mi>e</mi><msup><mo stretchy="false">(</mo><mo mathvariant="normal" lspace="0em" rspace="0em">′</mo></msup><msup><mo>:</mo><mo mathvariant="normal" lspace="0em" rspace="0em">′</mo></msup><mo separator="true">,</mo></mrow><annotation encoding="application/x-tex">t = explode( ':', </annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.6151em;"></span><span class="mord mathnormal">t</span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel">=</span><span class="mspace" style="margin-right:0.2778em;"></span></span><span class="base"><span class="strut" style="height:1.0019em;vertical-align:-0.25em;"></span><span class="mord mathnormal">e</span><span class="mord mathnormal">x</span><span class="mord mathnormal" style="margin-right:0.01968em;">pl</span><span class="mord mathnormal">o</span><span class="mord mathnormal">d</span><span class="mord mathnormal">e</span><span class="mopen"><span class="mopen">(</span><span class="msupsub"><span class="vlist-t"><span class="vlist-r"><span class="vlist" style="height:0.7519em;"><span style="top:-3.063em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mtight">′</span></span></span></span></span></span></span></span></span><span class="mrel"><span class="mrel">:</span><span class="msupsub"><span class="vlist-t"><span class="vlist-r"><span class="vlist" style="height:0.7519em;"><span style="top:-3.063em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mtight">′</span></span></span></span></span></span></span></span></span></span><span class="base"><span class="strut" style="height:0.3em;vertical-align:-0.1944em;"></span><span class="mpunct">,</span></span></span></span>v, 2 );
if( isset( $t[1] ) )
<span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>h</mi><mi>e</mi><mi>a</mi><mi>d</mi><mo stretchy="false">[</mo><mi>t</mi><mi>r</mi><mi>i</mi><mi>m</mi><mo stretchy="false">(</mo></mrow><annotation encoding="application/x-tex">head[ trim(</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord mathnormal">h</span><span class="mord mathnormal">e</span><span class="mord mathnormal">a</span><span class="mord mathnormal">d</span><span class="mopen">[</span><span class="mord mathnormal">t</span><span class="mord mathnormal" style="margin-right:0.02778em;">r</span><span class="mord mathnormal">im</span><span class="mopen">(</span></span></span></span>t[0]) ] = trim( $t[1] );
else
{
<span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>h</mi><mi>e</mi><mi>a</mi><mi>d</mi><mo stretchy="false">[</mo><mo stretchy="false">]</mo><mo>=</mo></mrow><annotation encoding="application/x-tex">head[] = </annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord mathnormal">h</span><span class="mord mathnormal">e</span><span class="mord mathnormal">a</span><span class="mord mathnormal">d</span><span class="mopen">[</span><span class="mclose">]</span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel">=</span></span></span></span>v;
if( preg_match( "#HTTP/[0-9\.]+\s+([0-9]+)#",$v, $out ) )
<span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>h</mi><mi>e</mi><mi>a</mi><mi>d</mi><msup><mo stretchy="false">[</mo><mo mathvariant="normal" lspace="0em" rspace="0em">′</mo></msup><mi>r</mi><mi>e</mi><mi>p</mi><mi>o</mi><mi>n</mi><mi>s</mi><msub><mi>e</mi><mi>c</mi></msub><mi>o</mi><mi>d</mi><msup><mi>e</mi><mo mathvariant="normal" lspace="0em" rspace="0em">′</mo></msup><mo stretchy="false">]</mo><mo>=</mo><mi>i</mi><mi>n</mi><mi>t</mi><mi>v</mi><mi>a</mi><mi>l</mi><mo stretchy="false">(</mo></mrow><annotation encoding="application/x-tex">head['reponse_code'] = intval(</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:1.0019em;vertical-align:-0.25em;"></span><span class="mord mathnormal">h</span><span class="mord mathnormal">e</span><span class="mord mathnormal">a</span><span class="mord mathnormal">d</span><span class="mopen"><span class="mopen">[</span><span class="msupsub"><span class="vlist-t"><span class="vlist-r"><span class="vlist" style="height:0.7519em;"><span style="top:-3.063em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mtight">′</span></span></span></span></span></span></span></span></span><span class="mord mathnormal">re</span><span class="mord mathnormal">p</span><span class="mord mathnormal">o</span><span class="mord mathnormal">n</span><span class="mord mathnormal">s</span><span class="mord"><span class="mord mathnormal">e</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.1514em;"><span style="top:-2.55em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight">c</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mord mathnormal">o</span><span class="mord mathnormal">d</span><span class="mord"><span class="mord mathnormal">e</span><span class="msupsub"><span class="vlist-t"><span class="vlist-r"><span class="vlist" style="height:0.7519em;"><span style="top:-3.063em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mtight">′</span></span></span></span></span></span></span></span></span><span class="mclose">]</span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel">=</span><span class="mspace" style="margin-right:0.2778em;"></span></span><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord mathnormal">in</span><span class="mord mathnormal">t</span><span class="mord mathnormal" style="margin-right:0.03588em;">v</span><span class="mord mathnormal">a</span><span class="mord mathnormal" style="margin-right:0.01968em;">l</span><span class="mopen">(</span></span></span></span>out[1]);
}
}
return $head;
}
print_r(parseHeaders($http_response_header));
/*
Array
(
[0] => HTTP/1.1 200 OK
[reponse_code] => 200
[Date] => Fri, 01 May 2015 12:56:09 GMT
[Server] => Apache
[X-Powered-By] => PHP/5.3.3-7+squeeze18
[Set-Cookie] => PHPSESSID=ng25jekmlipl1smfscq7copdl3; path=/
[Expires] => Thu, 19 Nov 1981 08:52:00 GMT
[Cache-Control] => no-store, no-cache, must-revalidate, post-check=0, pre-check=0
[Pragma] => no-cache
[Vary] => Accept-Encoding
[Content-Length] => 872
[Connection] => close
[Content-Type] => text/html
)
*/
?>14 days ago
This feature has been deprecated as of PHP 8.5.0.
Here is a way to use it and be compatible with old and modern PHP version:
<?php
function get_contents() {
file_get_contents("http://example.com");
// For PHP >= 8.4.0
if (function_exists('http_get_last_response_headers')) {
$http_response_header = http_get_last_response_headers();
}
// No need for older PHP version
var_dump($http_response_header);
}
?>