<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">@color/redColorPrimary</item>
<item name="colorPrimaryDark">@color/redColorPrimaryDark</item>
<item name="colorAccent">@color/redColorAccent</item>
<item name="android:statusBarColor">@color/redColorPrimaryDark</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
我正在尝试这样做,以便当我在输入字段中键入水果并按下按钮时,它将被推送到数组,以使这项工作,我尝试使用会话。不幸的是它不起作用,上面是我试过的
答案 0 :(得分:0)
你需要:
以下是建议的代码:
session_start();
// first time initialisation
if (!isset($_SESSION['fruit'])) $_SESSION['fruit'] = array("Pear", "Apple", "Orange");
// get current list from session
$fruit = $_SESSION['fruit'];
// add new fruit if provided, and update session variable as well
if(isset($_POST['add'])) {
array_push($fruit, $_POST['fruit']);
$_SESSION['fruit'] = $fruit;
}
现在确保在浏览器中输出新列表。因此,将输出代码移出if
块,如下所示:
if(isset($_POST['sort'])) {
sort($fruit);
}
if(isset($_POST['shuffle'])) {
shuffle($fruit);
}
// Always output
foreach ($fruit as $key => $val) {
echo "- " . $val . "<br />" . "\n";
}
这是完整的代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>13.15</title>
</head>
<body>
<form method="post">
fruit: <input type="text" name="fruit"><br><br>
<input type="submit" name="add" value="add"><br><br>
-------------------------<br><br>
<input type="submit" name="sort" value="sort">
<input type="submit" name="shuffle" value="'shuffle'"><br><br>
-------------------------
<br><br>
</form>
<?php
session_start();
// first time initialisation
if (!isset($_SESSION['fruit'])) $_SESSION['fruit'] = array("Pear", "Apple", "Orange");
// get current list from session
$fruit = $_SESSION['fruit'];
// add new fruit if provided, and update session variable as well
if(isset($_POST['add'])) {
array_push($fruit, $_POST['fruit']);
$_SESSION['fruit'] = $fruit;
}
if(isset($_POST['sort'])) {
sort($fruit);
}
if(isset($_POST['shuffle'])) {
shuffle($fruit);
}
// Always output
foreach ($fruit as $key => $val) {
echo "- " . $val . "<br />" . "\n";
}
?>
</body>
</html>
答案 1 :(得分:0)
<?php
error_reporting(E_ALL);
$output='';
session_start();
if(isset($_SESSION['fruits'])){
$fruits=unserialize(stripslashes($_SESSION['fruits']));
if (!is_array($fruits)) {
// something went WRONG - initialize to custom array
$fruits = array("Pear", "Apple", "Orange");
}
}//at this point you have the last session to an array
if(isset($_POST['add']))
{
$txt=$_POST['fruit'];
if(!empty($txt)) array_push($fruits, $txt);
}
if(isset($_POST['sort']))
{
sort($fruits);
}
if(isset($_POST['shuffle']))
{
shuffle($fruits);
}
/*at this point even add/sort or shuffle the final
array you should store it for the next session*/
if(isset($fruits)){
$_SESSION['fruits']=serialize($fruits);
/* you should center here an content for later output*/
foreach ($fruits as $key => $val) {
$output.= "- " . $val . "<br />" . "\n";
}
}
/*
you should NOT send content when you store sessions cookies
see? no blank or chars here-> <?php
neither ->X ?>X<!DOCTYPE html>
|
|
__ */
?><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>13.15</title>
</head>
<body>
<form method="post">
fruit: <input type="text" name="fruit"><br><br>
<input type="submit" name="add" value="add"><br><br>
-------------------------<br><br>
<input type="submit" name="sort" value="sort"> <input type="submit" name="shuffle" value="'shuffle'"><br><br>
-------------------------
<br><br>
</form>
<?php
echo($output);
phpinfo();
?>
</body>
</html>
答案 2 :(得分:0)
您要做的是使用$('#districts_id,#tehsils_id,#projects_id,#centers_id,#schools_id').on('change', function() {
//alert($("#districts_id option:selected").attr("title"));
//var parameters = {};
var parameters;
var url;
if($('#schools_id').val())
{
$("#users_id").removeAttr('disabled');
//parameters = JSON.stringify({schools_centers_id:$('#centers_id').val()});
parameters = {"users_schools_id": $('#schools_id').val(), users_gender: $('#gender').val()};
url = "<?php echo base_url();?>/BtaAdministratorUnionMembers/get_teachers_users_by_school_id";
}
else if($('#centers_id').val())
{
$("#schools_id").removeAttr('disabled');
//parameters = JSON.stringify({schools_centers_id:$('#centers_id').val()});
parameters = {"schools_centers_id": $('#centers_id').val()};
url = "<?php echo base_url();?>/BtaAdministratorUsers/get_schools_by_center_id";
}
else if($('#projects_id').val())
{
$("#centers_id").removeAttr('disabled');
//parameters = JSON.stringify({centers_probject_id:$('#projects_id').val()});
parameters = {"centers_probject_id": $('#projects_id').val()};
url = "<?php echo base_url();?>/BtaAdministratorUsers/get_centers_by_project_id";
}
else if($("#tehsils_id option:selected").attr("title") == 'tehsils_id')//($('#tehsils_id').val())
{
$("#projects_id").removeAttr('disabled');
//parameters = JSON.stringify({projects_tehsil_id:$('#tehsils_id').val()});
parameters = {"projects_tehsil_id": $('#tehsils_id').val()};
url = "<?php echo base_url();?>/BtaAdministratorUsers/get_projects_by_tehsil_id";
//alert(parameters + ' '+ url);
}
else if($("#districts_id option:selected").attr("title") == 'districts_id')//($('#districts_id').val())
{
$("#tehsils_id").removeAttr('disabled');
//$("#tehsils_id").empty();
//parameters = JSON.stringify({tehsils_districts_id:$('#districts_id').val()});
parameters = {"tehsils_districts_id": $('#districts_id').val()};
url = "<?php echo base_url();?>/BtaAdministratorUsers/get_tehsils_by_districts_id";
//alert(parameters + ' '+ url);
}
$.ajax({
type: "GET",
url: url,
data:parameters,
//contentType: "application/json;charset=utf-8",
dataType: 'json',
success: function(data){
//alert(data);
//alert(JSON.stringify(data));
if($('#schools_id').val())
{
//alert(JSON.stringify(data));
$('#users_id').empty();
$('#users_id').append("<option value=''>Select Teacher....</option>");
$.each(data,function(key,value){
$('#users_id').append('<option value="'+value.users_id+'">'+value.users_firstname_users_lastname+'</option>');
});
}
else if($('#centers_id').val())
{
//alert(JSON.stringify(data));
$('#schools_id').empty();
$('#schools_id').append("<option value=''>Select School....</option>");
$.each(data,function(key,value){
$('#schools_id').append('<option value="'+value.schools_id+'">'+value.schools_name+'</option>');
});
}
else if($('#projects_id').val())
{
//alert(JSON.stringify(data));
$('#centers_id').empty();
$('#centers_id').append("<option value=''>Select Center....</option>");
$.each(data,function(key,value){
$('#centers_id').append('<option value="'+value.centers_id+'">'+value.centers_schoolName+'</option>');
});
}
else if($("#tehsils_id option:selected").attr("title") == 'tehsils_id')//($('#tehsils_id').val())
{
//alert(JSON.stringify(data));
$('#projects_id').empty();
$('#projects_id').append("<option value=''>Select Project....</option>");
$.each(data,function(key,value){
$('#projects_id').append('<option value="'+value.projects_id+'">'+value.projects_name+'</option>');
});
}
else if($("#districts_id option:selected").attr("title") == 'districts_id')//($('#districts_id').val())
{
//clearDropDown($('select'), 5);
$('#tehsils_id').empty();
$('#tehsils_id').append("<option value='' title=tehsils_id>Select Tehsils....</option>");
$.each(data,function(key,value){
$('#tehsils_id').append('<option value="'+value.tehsils_id+'" title=tehsils_id>'+value.tehsils_name+'</option>');
});
}
},
error: function(data){
alert(JSON.stringify(data));
//console.log(data);
}
});
});
,就好像
#include<iostream>
using namespace std;
int length=10;
int arr[]={0,1,2,3,4,5,6,7,8,9};
void infront(int front, int back);
int main()
{
int front,back; //(front infront of back)
cout<<"array is: ";
for(int i=0; i<length;i++)
cout<<arr[i]<<',';
cout<<"enter position of front element";
cin>>front;
cout<<"Enter position of back element";
cin>>back;
infront(front,back);
cout<<"array is: ";
for(int i=0; i<length;i++)
cout<<arr[i]<<',';
}
void infront(int front, int back)
{
int temp,i;
temp=arr[front];
if(back < front)
{
for(i=front;i<back-1;i++)
{
arr[i]=arr[i+1];
}
arr[i]=temp;
}
else
{
for(i=front;i>back;i--)
{
arr[i]=arr[i-1];
}
arr[i]=temp;
}
}
一样
要做到这一点,你必须使用一个参考
根据您正在进行的分配,该值只是从一个变量传递到另一个变量
例如
$fruit
值4仅从$_SESSION['fruit']
传递到$a = 4;
$b = $a;
$b = 5;
// $a =4, $b = 5
,$a
中的任何更改都不会反映在$b
中,因为它们是2个单独的变量
另一方面,如果您使用引用,则实质上是给变量另一个名称,并且将反映更改
$b
对于您的代码,它可能会产生类似
的内容$a