在URL中发布多个变量并使用复选框
Posting multiple variable in URL and working with checkboxes
这是基于以下示例：
http://www.w3schools.com/php/php_ajax_database.asp
区别主要是我使用复选框而不是选择，并且我希望能够在多个复选框表单中选择多个项目：
以下是我遇到的两个问题：
- 我希望能够在URL中发布多个变量，因为到目前为止，只能发布一个变量，而未选择的变量会出现错误
- 我希望能够同时选择多个复选框。在其当前状态下，您可以选择多个复选框，但结果仅在最后一个复选框上进行调整。FOr实例，如果复选框2+3为复选框，则只显示3，此时我希望得到2和3的结果
以下是html部分：
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script>
function showUser() {
var selectedPerson = $('#testform').serialize();
document.getElementById("txtHint").innerHTML = "<div class='loading-indication'><img src='ajax-loader.gif' /> Please wait... Loading New Courses...</div>";
$.ajax({
url:'getuser.php',
type:'post',
data:selectedPerson,
success:function(res){
$('#txtHint').html(res);
}
})
}
</script>
<script>
function showUser2() {
var selectedPerson = $('#testform2').serialize();
document.getElementById("txtHint").innerHTML = "<div class='loading-indication'><img src='ajax-loader.gif' /> Please wait... Loading New Courses...</div>";
$.ajax({
url:'getuser.php',
type:'post',
data:selectedPerson,
success:function(res){
$('#txtHint').html(res);
}
})
}
</script>
</head>
<body>
<form id="testform">
<input onchange="showUser();" name="person[]" type="checkbox" value="1">One<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="2">Two<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="3">Three<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="4">Four<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="5">Five<br>
</form>
<form id="testform2">
<input onchange="showUser2();" name="person2[]" type="checkbox" value="communication">communication<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="business">business<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="html and css">Three<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="sql">Four<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="windows">Five<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="cloud">Cloud<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="microsoft office">Java<br>
</form>
<br>
<div id="txtHint"><b>Person info will be listed here...</b></div>
</body>
</html>
以下是PHP部分：
<!DOCTYPE html>
<html>
<head>
<style>
table {
width: 100%;
border-collapse: collapse;
}
table, td, th {
border: 1px solid black;
padding: 5px;
}
th {text-align: left;}
</style>
</head>
<body>
<?php
$person = '';
$person = isset($_POST['person']) ? $_POST['person'] : '';
$allIds = '';
if($person!=''){
foreach($person as $personid){
$allIds .= $personid.',';
}
$personid = rtrim($allIds,',');
}
$person2 = '';
$person2 = isset($_POST['person2']) ? $_POST['person2'] : '';
$allIds = '';
if($person2!=''){
foreach($person2 as $personid2){
$allIds .= $personid2.',';
}
$personid2 = rtrim($allIds,',');
}
include("includes/db.php");
global $con;
$sql= "SELECT * FROM courses WHERE (course_duration IN ('" . $personid . "')) OR (course_duration IN ('" . $personid2. "')) LIMIT 10";
$result = mysqli_query($con,$sql);
$sqlCount = "SELECT * FROM courses WHERE (course_duration IN ('" . $personid . "')) OR (course_subc1 IN ('" . $personid2. "')) OR (course_subc3 IN ('" . $personid2. "')) OR (course_subc1 IN ('" . $personid2. "')) OR (course_subc4 IN ('" . $personid2. "')) OR (course_subc5 IN ('" . $personid2. "'))";
$get_crs_count = mysqli_query($con, $sqlCount);
$count_rows = mysqli_num_rows($get_crs_count);
echo '<p style="margin-bottom: 8px;margin-top: 8px;font-size:18px;"><b>Number of courses available: </b>' . $count_rows ;
while($row_crs = mysqli_fetch_array($result)){
$crs_id = $row_crs['course_id'];
$crs_cat = $row_crs['course_cat'];
$crs_provider = $row_crs['course_provider'];
$crs_title = $row_crs['course_title'];
$crs_price = $row_crs['course_price'];
$crs_city= $row_crs['course_city'];
$crs_category= $row_crs['course_cat1'];
$crs_date= $row_crs['course_date1'];
$crs_sdesc= $row_crs['course_sdesc'];
$crs_shortdesc = mb_strimwidth("$crs_sdesc",0,140,"...");
$crs_image = $row_crs['course_image'];
$provider_image = $row_crs['provider_image'];
echo " <article class='search-result row'><center>
<div class='col-xs-12 col-sm-12 col-md-3' id='thumbnailContainer'>
<a href='#' title='Lorem ipsum' class='thumbnail' id='resultThumbnail'><img src='$provider_image' /></a>
<a href='searchPage.php?crs_price=$crs_price' style='color:black;'> <button id='resultprice'><span id='resultpriceText'>$ $crs_price</span></button></a>
</div>
<div class='col-xs-12 col-sm-12 col-md-2'>
<ul class='meta-search' id='listDesign'>
<a href='searchPage.php?crs_date=$crs_date' style='color:white;'> <li><button id='resultInfo'><i class='fa fa-calendar fa-1x'><span id='iconText'> $crs_date</span></i></button></li></a>
<a href='searchPage.php?crs_category=$crs_category' style='color:white;'> <li><button id='resultInfo2'><i class='fa fa fa-tags fa-1x'><span id='iconText'> $crs_category</span></i></button></li></a>
<a href='searchPage.php?crs_provider=$crs_provider' style='color:white;'><li><button id='resultInfo'><i class='fa fa-graduation-cap fa-1x'><span id='iconText'> $crs_provider</span></i></button></li></a>
<a href='searchPage.php?city=$crs_city' style='color:white;'><li><button id='resultInfo'><i class='fa fa-map-marker fa-1x'><span id='iconText'> $crs_city</span></i></button></li></a>
</ul>
</div></center>
<div class='col-xs-12 col-sm-12 col-md-7 excerpet'>
<h3 id='resultHeading'><a href='coursePage.php?crs_id=$crs_id' id='headingLinking'><b>$crs_title</b></a></h3>
<div id='courseshortDescription'>
$crs_shortdesc
<center><a href='coursePage.php?crs_id=$crs_id' style='color:white;'><button class='btn btn-danger' id='findoutBtn'>Find Out More</button></a> </center>
</div>
</div>
<span class='clearfix borda'></span>
</article>";
}
mysqli_close($con);
?>
</body>
</html>
更新：
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script>
function showUser() {
var selectedPeople = {person: []};
$('input[name="person"]:checked').each(function() {
selectedPeople.person.push($(this).val());
}); document.getElementById("txtHint").innerHTML = "<div class='loading-indication'><img src='ajax-loader.gif' /> Please wait... Loading New Courses...</div>";
$.ajax({
url:'getuser.php',
type:'post',
data:selectedPerson,
success:function(res){
$('#txtHint').html(res);
}
})
}
</script>
<script>
function showUser2() {
var selectedPeople = {person2: []};
$('input[name="person2"]:checked').each(function() {
selectedPeople.person2.push($(this).val());
}); document.getElementById("txtHint").innerHTML = "<div class='loading-indication'><img src='ajax-loader.gif' /> Please wait... Loading New Courses...</div>";
$.ajax({
url:'getuser.php',
type:'post',
data:selectedPerson,
success:function(res){
$('#txtHint').html(res);
}
})
}
</script>
</head>
<body>
<form id="testform">
<input onchange="showUser();" name="person[]" type="checkbox" value="1">One<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="2">Two<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="3">Three<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="4">Four<br>
<input onchange="showUser();" name="person[]" type="checkbox" value="5">Five<br>
</form>
<form id="testform2">
<input onchange="showUser2();" name="person2[]" type="checkbox" value="communication">communication<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="business">business<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="html and css">Three<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="sql">Four<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="windows">Five<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="cloud">Cloud<br>
<input onchange="showUser2();" name="person2[]" type="checkbox" value="microsoft office">Java<br>
</form>
<br>
<div id="txtHint"><b>Person info will be listed here...</b></div>
</body>
</html>
php文件
<!DOCTYPE html>
<html>
<head>
<style>
table {
width: 100%;
border-collapse: collapse;
}
table, td, th {
border: 1px solid black;
padding: 5px;
}
th {text-align: left;}
</style>
</head>
<body>
<?php
$person = filter_input(INPUT_POST, 'person', FILTER_VALIDATE_INT, FILTER_FORCE_ARRAY);
foreach ($person as $personid)
{
$allIds .= $personid.',';
}
$personid = rtrim($allIds,',');
}
$person2 = filter_input(INPUT_POST, 'person2', FILTER_VALIDATE_INT, FILTER_FORCE_ARRAY);
foreach ($person2 as $personid2)
{
$allIds2 .= $personid2.',';
}
$personid2 = rtrim($allIds2,',');
}
include("includes/db.php");
global $con;
$sql= "SELECT * FROM courses WHERE (course_duration IN ('" . $personid . "')) OR (course_duration IN ('" . $personid2. "')) LIMIT 10";
$result = mysqli_query($con,$sql);
$sqlCount = "SELECT * FROM courses WHERE (course_duration IN ('" . $personid . "')) OR (course_subc1 IN ('" . $personid2. "')) OR (course_subc3 IN ('" . $personid2. "')) OR (course_subc1 IN ('" . $personid2. "')) OR (course_subc4 IN ('" . $personid2. "')) OR (course_subc5 IN ('" . $personid2. "'))";
$get_crs_count = mysqli_query($con, $sqlCount);
$count_rows = mysqli_num_rows($get_crs_count);
echo '<p style="margin-bottom: 8px;margin-top: 8px;font-size:18px;"><b>Number of courses available: </b>' . $count_rows ;
while($row_crs = mysqli_fetch_array($result)){
$crs_id = $row_crs['course_id'];
$crs_cat = $row_crs['course_cat'];
$crs_provider = $row_crs['course_provider'];
$crs_title = $row_crs['course_title'];
$crs_price = $row_crs['course_price'];
$crs_city= $row_crs['course_city'];
$crs_category= $row_crs['course_cat1'];
$crs_date= $row_crs['course_date1'];
$crs_sdesc= $row_crs['course_sdesc'];
$crs_shortdesc = mb_strimwidth("$crs_sdesc",0,140,"...");
$crs_image = $row_crs['course_image'];
$provider_image = $row_crs['provider_image'];
echo " <article class='search-result row'><center>
<div class='col-xs-12 col-sm-12 col-md-3' id='thumbnailContainer'>
<a href='#' title='Lorem ipsum' class='thumbnail' id='resultThumbnail'><img src='$provider_image' /></a>
<a href='searchPage.php?crs_price=$crs_price' style='color:black;'> <button id='resultprice'><span id='resultpriceText'>$ $crs_price</span></button></a>
</div>
<div class='col-xs-12 col-sm-12 col-md-2'>
<ul class='meta-search' id='listDesign'>
<a href='searchPage.php?crs_date=$crs_date' style='color:white;'> <li><button id='resultInfo'><i class='fa fa-calendar fa-1x'><span id='iconText'> $crs_date</span></i></button></li></a>
<a href='searchPage.php?crs_category=$crs_category' style='color:white;'> <li><button id='resultInfo2'><i class='fa fa fa-tags fa-1x'><span id='iconText'> $crs_category</span></i></button></li></a>
<a href='searchPage.php?crs_provider=$crs_provider' style='color:white;'><li><button id='resultInfo'><i class='fa fa-graduation-cap fa-1x'><span id='iconText'> $crs_provider</span></i></button></li></a>
<a href='searchPage.php?city=$crs_city' style='color:white;'><li><button id='resultInfo'><i class='fa fa-map-marker fa-1x'><span id='iconText'> $crs_city</span></i></button></li></a>
</ul>
</div></center>
<div class='col-xs-12 col-sm-12 col-md-7 excerpet'>
<h3 id='resultHeading'><a href='coursePage.php?crs_id=$crs_id' id='headingLinking'><b>$crs_title</b></a></h3>
<div id='courseshortDescription'>
$crs_shortdesc
<center><a href='coursePage.php?crs_id=$crs_id' style='color:white;'><button class='btn btn-danger' id='findoutBtn'>Find Out More</button></a> </center>
</div>
</div>
<span class='clearfix borda'></span>
</article>";
}
mysqli_close($con);
?>
</body>
</html>
没有显示任何错误，但当选中复选框时会发生什么，它只是停在这一行（在索引js上）：
}); document.getElementById("txtHint").innerHTML = "<div class='loading-indication'><img src='ajax-loader.gif' /> Please wait... Loading New Courses...</div>";
不要使用var selectedPerson = $('#testform').serialize();，而是尝试以下操作：
var selectedPeople = {person: []};
$('input[name="person[]"]:checked').each(function() {
selectedPeople.person.push($(this).val());
});
并且在您的PHP中将$person = ...更改为：
$person = filter_input(INPUT_POST, 'person', FILTER_VALIDATE_INT, FILTER_FORCE_ARRAY);
foreach ($person as $personid)
{
$allIds .= $personid.',';
}
$personid = rtrim($allIds,',');
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