CODEWITHSUNDEEP
phpforms
user381800
user381800

Reputation:

PHP How to process a form that has dynamically generated fields?

I am trying to process a form which I don't know ahead of time what the form fields will be. Can this still be done in PHP?

For example I have this html form:

<form method="post" action="process.php">
     <?php get_dynamic_fields(); // this gets all the fields from DB which I don't know ahead of time what they are. ?>
     <input type="submit" name="submit" value="submit" /> 
</form>

And here is what I have in the PHP process file

<?php
if ( isset( $_POST['submit'] ) && $_POST['submit'] === 'submit' ) {
     // process form here but how do I know what field names and such if they are dynamic.
}

?>

Here is a caveat: assuming I can't get the data from the db ahead of time, is there still a way to do this?

Upvotes: 1

Views: 6356

Answers (5)

oikku
oikku

Reputation: 562

This will give you the field names used in HTML form.

$field_names = array_keys($_POST);

You can also just iterate through the POST array using

foreach($_POST as $field_name => $field_value) {
    // do what ever you need to do
    /* with the field name  and field value */
}

Upvotes: 1

Dan
Dan

Reputation: 3815

Get the names of the fields from your get_dynamic_fields function and pass them in a hidden input that is always an array with a static name. Then parse it to get the names of the inputs and how many there are.

Upvotes: 0

Sch&#228;bo
Sch&#228;bo

Reputation: 193

you could loop over all parts of the `$_POST array;

foreach($_POST as $key => $value){
   //$key contains the name of the field
}

Upvotes: 0

Kaiwa
Kaiwa

Reputation: 151

You can iterate over all $_POST keys like this.

foreach($_POST as $key => $value)
{
    echo $key.": ".$value;
}

Upvotes: 1

user142162
user142162

Reputation:

Sure, just iterate over all the items in the $_POST array:

foreach ($_POST as $key => $value) {
    // Do something with $key and $value
}

Note, your submit button will exist in the array $_POST, so you may want to write some code to handle that.

Upvotes: 5

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