creating a Session variable in onclick() event of PHP submit button

Question

I created a form and have gone through a similar question on Stackoverflow as well, relating to this area of sending a variable from one page to another.

I need to pass this value $id=$row['id']; to the next page, but if I store it in the session variable (inside the while lopp) then it stored only the last item and not the current value.

<form name="send" method="POST" action="got.php">
 <hidden id="value" name="value"/>
//<input type="text" id="value">
//<input type="hidden" name="myVariable" value="'.  htmlentities("myVariable").'">;
<input type=submit name=submit value="submit"  onclick="<?php session_start(); $_SESSION(this.id) ?>">
</form>

The full code is given below,

echo "<form name=payment action='properties_details.php'>";
echo "Results <br>";
while ($row= mysql_fetch_array($result)) {
echo " <table border=3 cell padding=1> <tr> <td> ";

$id=$row['id'];
$pid=$row['pref'];
//And the remaining values as well      

//<input type="hidden" name="myVariable" value="'.  htmlentities($pid).'">;
//<input type="hidden" name="myVariable" value="'.  $pid.'">;

echo "<p>Property ID &nbsp".$pid;
echo "<br> <p> Name &nbsp";
echo $row["name"];
echo "<br>  Properties &nbsp";
echo $row["catergory"];
// And printing the remaining values

echo "<input type=submit name=btnbuy value=Details> ";

What's this? <input type=submit name=submit value="submit" onclick="<?php session_start(); $_SESSION(this.id) ?>"> You seem to mix JS with PHP. — Dexter Huinda
– Dexter Huinda, Commented Jul 16, 2012 at 8:08
I tried doing it separately as well (javascript between head tags) but it didnt work — Yoosuf
– Yoosuf, Commented Jul 16, 2012 at 8:11
You should do it separately. It won't work because you were handling it incorrectly. — Dexter Huinda
– Dexter Huinda, Commented Jul 16, 2012 at 8:13
but in javascript you cannot make SESSION variables, so then it would give the same result as now (last value in the loop) — Yoosuf
– Yoosuf, Commented Jul 16, 2012 at 8:14
PHP session variables are handled inside the PHP code, not in HTML or JS scripts. — Dexter Huinda
– Dexter Huinda, Commented Jul 16, 2012 at 8:17

Dexter Huinda · Accepted Answer · 2012-07-16 08:22:48Z

2

You were not handling PHP sessions correctly.
Your onclick event should fire a JS code, not PHP code.
PHP is a back-end scripting language, and JS is a front-end scripting language. They don't mix.

Suggestion: Before you proceed with coding, read more about html, forms, passing form variables to php, php sessions etc.

Resources/Tutorials:

Tutorial for handling PHP sessions: http://php.about.com/od/advancedphp/ss/php_sessions.htm
Passing form variables to PHP Tutorial: http://www.html.net/tutorials/php/lesson11.php

edited Jul 16, 2012 at 8:22

answered Jul 16, 2012 at 8:09

Dexter Huinda

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3 Comments

Yoosuf Over a year ago

I tried the javascript technique however the variable is empty in the next page

Dexter Huinda Over a year ago

@Yoosuf show me the exact technique you made. Let us discuss this in chat.

Dexter Huinda Over a year ago

@Yoosuf go here: chat.stackoverflow.com/rooms/13922/…

user7939732 · Accepted Answer · 2017-04-29 06:45:51Z

1

you can pass your $id=$row['id'] on another page using query string easily.

on your button pass query string like this.

href="page_name.php?xyz=value you want to pass on second page"

1.here page_name.php is the page name on which you want to pass the value of $row['id'];

2.xyz is the query string name with the help of this we can get id on page_name.php

on page_name.php get query string as:

$id=$_GET["xyz"];

here xyz is a query string variable passed on button click

After that you can easily use this $row ['id'] on second page by using $id variable.

like this

echo $id;

answered Apr 29, 2017 at 6:45

user7939732

111 bronze badge

1 Comment

user7939732 Over a year ago

on submit button pass query string as <button type="button" href="secon_page.php?xyz<?php echo $row['id']; ?>">

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