Insert a value from the URL (PHP)

Question

I'll try to explain myself good as i can, I have this "value"

Picture here

And i want to do something that, when I enter to this link for example: http://example.com/index.php?value=50 It will insert the number 50 into the value..

<input type="number" name="amount" min="1" max="5000" value=""  />

Someone can help me please?

Thanks everyone the problem solved

this is basic knowledge you can find every where with example on the internet, — Maytham Fahmi, Aug 26 '16 at 20:40
This is not a jobs board. We are not here to "help" you. You show what you've attempted, explain what it SHOULD be doing, explain how it's NOT doing that, and we'll (maybe) try help fix it. — Marc B, Aug 26 '16 at 20:43
check this link http://stackoverflow.com/questions/5884807/get-url-parameter-in-php — Maytham Fahmi, Aug 26 '16 at 20:46

score 0 · Answer 1 · answered Aug 26 '16 at 20:47

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<input type="number" name="amount" min="1" max="5000" value="<?php echo (isset($_GET['value']) ? $_GET['value'] : '') ?>"  />

isset() is in place just in case the 'value' parameter has not been passed via the url

answered Aug 26 '16 at 20:47

Zentag

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Jonathan Lam · Answer 2 · 2016-08-26T20:59:57.770

URLs usually come in this format (see query strings on Wikipedia):

protocol://baseurl/path?queryparam1=value1&queryparam2=value2&queryparam3=value3...

In your URL, value is a GET query parameter and 50 is its value.

Access the query parameters with the PHP $_GET global array. Its keys are set to the values of the query parameters.

For example, the value "50" will be stored in $_GET['value']. You can store this in the value of your input element like so:

<input type="number" name="amount" min="1" max="5000" value="<?= $_GET['value'] ?>" />

(<?= $value ?> is the shortcut for <?php echo $value ?>, and can be used in PHP5.4+)

score 0 · Answer 3 · answered Aug 26 '16 at 20:50

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First, you have to retrieve the value from the URL (don't forget to sanitize the user input): <?php $value = htmlspecialchars($_GET['value']); ?>

Then, when you want to insert the value in your html, you just use <?php echo $value; ?>

For instance <input type="number" name="amount" min="1" max="5000" value="<?php echo $value; ?>" />

answered Aug 26 '16 at 20:50

Faibbus

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erh, say value contains a double quote and a `>`? – Faibbus Aug 26 '16 at 21:07

Insert a value from the URL (PHP)

3 Answers3