I use PHP 5.6 and PHPstorm 10.
html code following.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>test</title>
</head>
<body>
<form action="hello.php" method="post">
<input type="text" name="blabla">
<input type="submit">
</form>
</body>
</html>
PHP code following .
<?php
echo $_POST["blabla"];
?>
But if I change the method to GET.
It will be work. But I can not get the post value.
Then I install WAMP Server.when just use WAMP Server to access，it worked.why?why I can not use PHPStorm to get the post value.
You need to check "Request Type" by below way:-
$method = $_SERVER['REQUEST_METHOD'];
if ($method == 'POST') {
// Method is POST
echo "post";
$data = isset($_POST["blabla"]) ? $_POST["blabla"] : 'notset';
echo $data; // print data
} elseif ($method == 'GET') {
// Method is GET
echo "get";
} else {
// Method unknown may be put or delete
echo "unknown";
}
Hope it will help you :)
remove method = "post" of the form
PHP code following .
<?php
echo $_REQUEST["blabla"];
?>
Related
I have a short sample php code above:
<HTML XMLns="http://www.w3.org/1999/xHTML">
<head>
<title>Check for perfect palindrome</title>
</head>
<body>
<h1>Check for perfect palindrome</h1>
<form method="post">
<label for="stringInput">String:</label><input type="text" id="stringInput" name="stringInput"><br/>
<br/><input type="submit" name="submit" value="Check"/>
</form>
</body>
<?php
if(isset($_POST['stringInput']))
{
$string = $_POST['stringInput'];
if ($string =="")
{
echo "Please fill the form";
} else if ($string == strrev($string))
{
echo "You entered: <b>'$string'</b> is a perfect palindrome.";
} else
{
echo "You entered: <b>'$string'</b> is NOT a perfect palindrome.";
}
}
?>
</HTML>
Imagine that the code is saved under file sample.php and located at localhost/sample.php.
I want to fill the form and trigger the submit button through this link:
localhost/sample.php?stringInput=abc&submit=Check
How can I do that? Thanks for help.
I need to use POST method because the actual form has many inputs not just one and I want to know how it will work with POST. And using PHP only if possible. (Javascript, jQuery are not the first choices). Cheers.
This is a good example to demonstrate what I need.
http://image.online-convert.com/convert-to-jpg?external_url=jhjhj&width=333
I tried GET method and the form doesn't display value.
If you want to include the parameters in the URL you cannot use POST
From wikipedia:
the POST request method requests that a web server accept the data enclosed in the body of the request message
Whereas in a GET request (from w3schools):
the query string is sent in the URL of a GET request
Try this:
You can assign your post values to variables & echo them in your input.
<HTML XMLns="http://www.w3.org/1999/xHTML">
<head>
<title>Check for perfect palindrome</title>
</head>
<body>
<?php
$string = "";
if(isset($_POST['stringInput']))
{
$string = $_POST['stringInput'];
if ($string =="")
{
echo "Please fill the form";
} else if ($string == strrev($string) )
{
echo "You entered: <b>'$string'</b> is a perfect palindrome.";
} else
{
echo "You entered: <b>'$string'</b> is NOT a perfect palindrome.";
}
}
?>
<h1>Check for perfect palindrome</h1>
<form method="post">
<label for="stringInput">String:</label><input type="text" id="stringInput" name="stringInput" value="<?php echo $_REQUEST['stringInput'];?>"><br/>
<br/><input type="submit" name="submit" value="Check" />
</form>
</body>
</HTML>
You are using the wrong http method instead of POST you should use GET
"Note that the query string (name/value pairs) is sent in the URL of a
GET request"
Check more about these two methods here: POST vs GET
This is my html page:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Hello and welcome to my site</title>
</head>
<body>
<p>are these 2 numbers equal? type yes or no in the box</p>
<p2>one</p2> and eight
<form action="welcome_get.php" method="get">
Answer: <input type="text" name="name"><br>
<input type="submit">
</form>
</body>
</html>
this is my new php page containing a previous answer and im having new errors
<html>
<body>
<?php
var_dump($_GET['name']);
$answer = $_GET['name'];
$saying = "congratulations";
if ($answer == "yes"){
echo $saying;
}
?>
</body>
</html>
the new errors are referring to my php page which is welcome_get.php
var_dump($_GET['name']);
Additionally, to see all available GET params:
var_dump($_GET)
To assign to a new variable:
if(!empty($_GET['name'])){
$answer = $_GET['name'];
if($answer == 'something'){
// do something
}
}
You can use isset function to check if $_GET['var'] is set
if(isset($_GET['name'])){
$answer = $_GET['name'];
$saying = "congratulations";
if ($answer == "yes"){
echo $saying;
}
}
It is not possible to read out the $_POST variable with this code. Can you please give me a hint where the problem is? The condition block does not work.
When reading out the POST content from the Browser the values seem to be set and transfered.
<!doctype html>
<?php
// select post operation
echo "post=".$_POST["action"];
if ($_POST["action"] == "add"){
// insert and read out values from DB
echo "add-".$_POST["action"];
header("Location:".($_SERVER['PHP_SELF']));
unset($_POST);
} elseif ($_POST["action"] == "delete"){
echo "add-".$_POST["action"];
header("Location:".($_SERVER['PHP_SELF']));
unset($_POST);
}
else{
echo "why else after submit.";
}
$_REQUEST = $_POST = $_GET = NULL;
?>
<html lang="de">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>test</title>
</head>
<body>
<div>
<form action="<? echo ($_SERVER['PHP_SELF']);?>" method="post">
<input type="hidden" name="action" value="add">
<input type="submit" value="Submit">
</form>
</div>
</body>
</html>
You never check if a POST was actually performed, so your if() chain ALWAYS executes. When you first hit the page, that loads it as a GET, therefore you get the why else after submit error.
You need something more like this:
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
... check form submission, echo confirmation/errors, blah blah blah
}
... output html ...
Cause you redirect to an other page with
header("Location:".($_SERVER['PHP_SELF']));
actually you redirect to the same page so a brand new (same) page is served to you with an empty $_POST variable
I want to learn how to keep value after a post request.
In my code, I have these variables:
myvar
myans
result
myvar is a random val between 0-5. I will get myans from my input if myans == myvar, then result will be true (else it will be false).
I see myvar before I submit my ans just for trying, but although I see the var when I send it, what I see it is sometimes false and sometimes true. What am I missing?
example.php:
<?php
session_start();
if (!isset($_COOKIE['result'])) {
setcookie("result","EMPTY");
}
setcookie("myvar",rand(0,5));
if (!empty($_POST)) {
if ($_POST['myans'] == $_COOKIE['myvar']) {
setcookie("result","TRUE");
}
else {
setcookie("result","FALSE");
}
}
?>
<html>
<head>
<title>Example</title>
</head>
<body>
<form method="post" action="">
<?php echo $_COOKIE['myvar'] ?>
<input type="text" name="myans">
<input type="submit" value="Send">
<?php echo $_COOKIE['result'] ?>
</form>
</body>
</html>
The problem you were having was caused by your random number generator making creating a new number before comparing to the original. I made some changes to only set "myvar" if it's empty. this will only set it once, but at least you can see your code working as intended. I recommend you plan out what exactly what functionality you want before adding to it.
I also switched you out from the "$_COOKIE" var to "$_SESSION" vars. They are hidden from the client, and by php default last about 24 minutes if not refreshed. I don't know what you plan on using this for, but using cookies allows the end user to manipulate that info. If this is not a concern for you, by all means just uncomment the "setcookie()" lines.
<?php
session_start();
if (!isset($_SESSION['result'])) {
//setcookie("result","EMPTY");
$_SESSION["result"] = "EMPTY";
}
//setcookie("myvar",rand(0,5));
if(empty($_SESSION["myvar"])){
$_SESSION["myvar"] = rand(0,5);
}
//
if (!empty($_POST)) {
if ($_POST['myans'] == $_SESSION['myvar']) {
//setcookie("result","TRUE");
$_SESSION["result"] = "TRUE";
} else {
//setcookie("result","FALSE");
$_SESSION["result"] = "FALSE";
}
}
?>
<html>
<head>
<title>Example</title>
</head>
<body>
<form method="post" action="">
<?php echo isset($_SESSION['myvar']) ? $_SESSION['myvar'] : ""; ?>
<input type="text" name="myans">
<input type="submit" value="Send">
<?php echo isset($_SESSION['result']) ? $_SESSION['result'] : ""; ?>
</form>
</body>
</html>
I don't know how to deal with the error. i just want to pass the value to another page. i use "GET" method , it is okay. However, it is not working with "POST" method.
The error :
Undefined index: data in C:\Users\x\x\x\x\x on line 18
Testing.html:
<!DOCTYPE html>
<html lang="en">
<head>
</head>
<body>
<form method="POST" action="testing.php">
<input name="data" type="text">
<input type ="submit" value="send">
</form>
</body>
</html>
testing.php
<?php
$data = $_REQUEST["data"];
if (isset($data)) {
echo $data;
}
else
{
echo "No data ";
}
?>
This example does work - irrelevant of the send method (GET / POST).These cases are handled (and you possibly should too):
Variable "data" NOT TRANSMITTED.
Variable "data" transmitted BUT EMPTY
Variable "data" transmitted and HAS CONTENTS
HTML code
<!DOCTYPE html>
<head>
</head>
<body>
<form method="POST" action="testing.php">
<input name="data" type="text">
<input type ="submit" value="send">
</form>
</body>
</html>
PHP script
<?php
if (isset($_REQUEST["data"])) {
$data = trim($_REQUEST["data"]);
if (strlen($data) > 0) {
echo "Data sent: $data";
} else {
echo "Data sent but EMPTY";
}
} else {
echo "NO DATA sent";
}
?>
Result
Either one of...
NO DATA sent
Data sent: myData
Data sent but EMPTY
IMHO you should check if data is actually being passed or not. change your php as below:
<?php
$data = (isset($_REQUEST["data"]) && $_REQUEST["data"] != "") ? $_REQUEST["data"]: "no data" ;
echo $data;
//this should print value of data (or "no data" if no value passed)
?>
You can't assign it to a local variable before checking if it is present. You need to call isset on the actual thing you care about:
if (isset($_POST["data"])) {
$data = $_POST["data"];
Try this:
<?php
$data=trim($_POST['data']);
if(empty($data){
echo "no data";
} else {
echo $data;
}
?>