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gistfile1.php

#!/usr/bin/env php
<?php

if (!isset($_SERVER["argv"][1])) {
	fwrite(STDERR, "No keyword given\n");
	exit(1);
}

$xmlstring = @file_get_contents("http://php.net/" . urlencode($_SERVER["argv"][1]));
if ($xmlstring === false) {
	fwrite(STDERR, "Failed to fetch doc page\n");
	exit(2);
}

// remove default namespace
$xmlstring = preg_replace('%\bxmlns="[^"]*"%', "", $xmlstring);

$xml = @simplexml_load_string($xmlstring);
if ($xml === false) {
	fwrite(STDERR, "Failed to parse doc page\n");
	exit(3);
}

// get content div
$content = array_pop($xml->xpath("//div[@id='content']"));

if (is_null($content)) {
	fwrite(STDERR, "Couldn't find div with ID 'content'\n");
	exit(4);
}

// remove nav bars
foreach ($content->xpath("./div") as $nav)
	if (in_array("manualnavbar", explode(" ", $nav["class"])))
		simplexml_remove_node($nav);

// get new XML
$newxml = $content->asXML();

// run lynx
$lynx = proc_open("lynx -dump -stdin", array(array("pipe", "r"), array("pipe", "w"), array("pipe", "w")), $pipes);
if (!is_resource($lynx)) {
	fwrite(STDERR, "Couldn't run lynx\n");
	exit(5);
}

// poke new XML to lynx's stdin
fwrite($pipes[0], $newxml);
fclose($pipes[0]);

// get lynx's stdout
echo stream_get_contents($pipes[1]);
fclose($pipes[1]);
$erroroutput = stream_get_contents($pipes[2]);
fclose($pipes[2]);

// close lynx
$returnval = proc_close($lynx);

// check return value
if ($returnval != 0) {
	fwrite(STDERR, "lynx exited with code $returnval -- error output follows.\n$erroroutput");
	exit(6);
}

exit(0);

function simplexml_remove_node($node) {
	$domnode = dom_import_simplexml($node);
	$domnode->parentNode->removeChild($domnode);
}

?>