php - How could I keep the value of an input field unchanged by switching between webpages and not using the URL
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I am using two buttons to switch between pages. Button A in page1 sends me to page2. In page2 I have another button, which is button B. This Button sends me to page1 again. I do that many times.
In page1 I have an input (textarea), that I have filled out before hitting Button A. I would like to keep the value in that input(in page1) while going and coming between the two pages.
I could also modified my input in page1 when I come back from page2.
I don't want to use the URL. I have already been using it for other purpose.
I have also tried this, but it does not work.
This is page1.php
<textarea name="textarea" id="textarea">
<?php if(isset($_POST['textarea'])) {
echo $_POST['textarea']; ?>
</textarea>
<a href="page2.php" id="button1"> Button A </a>
and here is page2.php
<a href="page1.php">Button B </a>
When I do it with SESSION it gets empty when I come back to page1.
Then I have tried it using ajax. -> in page1.php
<?php
if(isset($_POST['actual_val']) and strlen($_POST['actual_val'])>5)
{
echo $_POST['actual_val'];
}else{
echo "nothing";
}
?>
<html>
<textarea name="textarea" id="textarea"><?php if(isset($_POST['actual_val'])) {
echo $_POST['actual_val']; }//closing brace of if
?></textarea>
<a href="page2.php" id="button1"> Button A </a>
<script>
$(document).ready(function(){
$('#button1').on('click',function(){
var input_val = $('#textarea').val();
var ajaxurl = 'page2.php';
data = {"input_val":input_val};
$.post(ajaxurl, data, function (response) {
// Response div goes here.
});
});
});
</script>
//Until here it seems to works fine.
</html>
Now in page2.php
<?php
if(isset($_POST['input_val']))
{
echo $_POST['input_val'];
}else{
echo "nothing";
}
?>
<html>
<a href="page1.php" id="button2"> Button B </a>
<script>
$(document).ready(function(){
$('#button2').on('click',function(){
var actual_val= <?php echo $_POST['input_val']; ?>;
var ajaxurl = 'page1.php';
data = {"actual_val":actual_val};
$.post(ajaxurl, data, function (response) {
// Response div goes here.
});
});
});
</script>
</html>
what would I be missing?
Answer
Solution:
I am doing this by just adding a form and using basic HTML and PHP, If its okay then good otherwise please give more scenario, we will implement that also. May be it will help you. There are many ways, I am doing this by basic one.
page1.php
<?php
if(isset($_POST['actual_val']) and strlen($_POST['actual_val'])>5)
{
echo $_POST['actual_val'];
}else{
echo "nothing";
}
?>
<html>
<head>
</head>
<body>
<form action="page2.php" method="post">
<textarea name="input_val" id="textarea">
<?php if(isset($_POST['actual_val'])) {
echo $_POST['actual_val']; }?>
</textarea>
<button type="submit" href="" id="button2"> Button A </button>
<form>
<script>
</script>
</body>
</html>Share solution ↓
Additional Information:
Link To Answer People are also looking for solutions of the problem: please make sure the php redis extension is installed and enabled.
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PHP
PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
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