PHP checking $_POST [closed]

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I have some form fields that when a form is submitted creates an array within the $_POST, I needing to check the this array has atleast 4 keys, how can I check that? I have no idea

Can you show some code please?

Pekka
– Pekka

2010-06-18 11:13:20 +00:00
Commented Jun 18, 2010 at 11:13 — Pekka
– Pekka, Commented Jun 18, 2010 at 11:13

Luke · Accepted Answer · 2012-12-18 09:14:24Z

9

try:

<?php 
if(count($_POST) >= 4):
//Do your stuff
else:
//Do your error stuff
endif;

If you want to check an array within $_POST as apose to $_POST itself use count($_POST['name_of_key_to_array_you_want_to_count'])

edited Dec 18, 2012 at 9:14

answered Jun 18, 2010 at 11:24

Luke

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ariefbayu · Accepted Answer · 2020-10-26 04:08:58Z

5

First, to make your work easier, you should change input name into array version. Something like this should work:

<input type='text' name='data[]' value='' />

Then, PHP will do it's magic and all you have to do is:

echo count($_POST['data']);

This is because your data[] form field is changed into array.

edited Oct 26, 2020 at 4:08

answered Jun 18, 2010 at 11:19

ariefbayu

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1 Comment

user7675 Over a year ago

Sounds closest to what he's actually asking: length of array within $_POST, rather than length of $_POST.

Sarfraz · Accepted Answer · 2010-06-18 11:12:34Z

2

Use array_keys and count:

echo count(array_keys($_POST));

Or simply:

echo count($_POST);

because keys are same in number as items.

answered Jun 18, 2010 at 11:12

Sarfraz

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Ignacio Vazquez-Abrams · Accepted Answer · 2010-06-18 11:13:21Z

0

The count() function returns the length of an array.

answered Jun 18, 2010 at 11:13

Ignacio Vazquez-Abrams

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