Solution for Baidu site search not supporting https (tested)

<input type="text" name="q" id="bdcsMain" value="Baidu site search" onfocus="if (value =='Baidu site search'){value =''}" onblur="if (value ==''){value='Baidu site search'}" >
 <button class="search-submit" id="btnPost" type="submit" onclick="window.open('http://zhannei.baidu.com/cse/search?s=1849457021752692468&entry=1&q='+document.getElementById('bdcsMain').value)">Search</button>

<form action="http://so.jb51.net/cse/search" method="get" target="_blank" class="bdcs-search-form" id="bdcs-search-form">
		<input name="s" value="10520733385329581432" type="hidden">
        <input name="entry" value="1" type="hidden">
        <input name="ie" value="gbk" type="hidden">
        <input name="nsid" value="3" type="hidden">
        <input name="ie" value="gbk" type="hidden">
<input type="text" placeholder="Please enter the keywords you are interested in" value="" id="search_txt1" maxlength="18" class="search_txt" name="q">
<input class="search_btn" value="Search" type="submit">
</form>

<div class="search">
<form action="/do/search.php" method="get" target="_blank" class="bdcs-search-form" id="bdcs-search-form">
		<input name="s" value="10520733385329581432" type="hidden">
        <input name="entry" value="1" type="hidden">
        <input name="ie" value="gbk" type="hidden">
        <input name="nsid" value="3" type="hidden">
        <input name="ie" value="gbk" type="hidden">
<input type="text" placeholder="Please enter the keywords you are interested in" value="" id="search_txt1" maxlength="18" class="search_txt" name="q">
<input class="search_btn" value="Search" type="submit">
</form>
</div>

<?php
error_reporting(E_ALL & ~E_NOTICE);
$s=is_numeric($_GET['s'])?$_GET['s']:0;
$entry=$_GET['entry']?intval($_GET['entry']):0;
$nsid=$_GET['nsid']?intval($_GET['nsid']):0;
$ie=$_GET['ie']?substr($_GET['ie'],0,3):0;
$q=$_GET['q']?urlencode($_GET['q']):'';
$url_str="http://so.jb51.net/cse/search?s=$s&entry=$entry&ie=$ie&nsid=$nsid&ie=$ie&q=$q";
header("Location: $url_str");
?>