Get URL parameter name in PHP

Question

I am working on a PHP controller, this is the URL:

www.example.com?field1=test1&field2=test2&field3=test3

I know I can get the value by this:

$_GET['field1'] // this will return test1

But I need something to return the name of the field, in this case field1, so I'm wondering if I can loop through the $_GET variable, but I'm not sure how.

`array_keys($_POST)`? or `foreach($_POST as $key => $value)`? — Marc B, Mar 10 '14 at 17:29
Possible duplicate? http://stackoverflow.com/questions/7163815/get-name-of-a-post-variable — Sobiaholic, Mar 10 '14 at 17:30
yeah sry, just wanted to give an example. of my scenario. good call. — Rodrigo Zurek, Mar 10 '14 at 18:11

score 4 · Accepted Answer · answered Mar 10 '14 at 17:29

4

$_POST is just an array. You can loop through it like this:

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

There's also an array_keys function that might be of use.

answered Mar 10 '14 at 17:29

hanleyhansen

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score 3 · Answer 2 · answered Mar 10 '14 at 17:29

3

If you print_r(array_keys($_POST)) you can get an array containing all of the parameter names.

answered Mar 10 '14 at 17:29

James

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score 3 · Answer 3 · answered Mar 10 '14 at 17:35

3

Use array_keys - "Return all the keys or a subset of the keys of an array"

http://us2.php.net/array_keys

answered Mar 10 '14 at 17:35

Pat Butkiewicz

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score 2 · Answer 4 · answered Mar 10 '14 at 17:30

2

To add to what @Marc B said, in php you can get the "keys" of an array with the array_keys method.

Here's a very nice url

answered Mar 10 '14 at 17:30

wspurgin

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score 0 · Answer 5 · answered Mar 10 '14 at 17:37

The array used for url params is $_GET, and you could iterate the paramametters on this way

foreach($_GET as $key => $value) {
    printf ("%s => %s", $key, $value);
}

You could use any of the arrays function for work for parametters and their contents

Get URL parameter name in PHP

5 Answers5