[RESOLVED] how to check for submitted info via eregi?

[onairric]

hi guys!

can somebody write the lines for me:
1. how to make sure that data from $_GET would be all numbers via eregi()

example:
 [code=html]www.domain.com?data=12345[/code]

 so how do i check and make sure that the stuff passed into "data" is a set of numbers ranging from 1-99999999?

  i like the code to look kinda like:
          [code=php]if (eregi ([0-9]{1,99999999})$, $_GET('data')) {[/code]

2. how about making sure that he submitted data is always a set of 8-digit numbers?

tnx for the help in advance!

[laserlight]

so how do i check and make sure that the stuff passed into "data" is a set of numbers ranging from 1-99999999?

Check:

if (1 <= $_GET['data'] && $_GET['data'] <= 99999999)

2. how about making sure that he submitted data is always a set of 8-digit numbers?

Check:

if (ctype_digit($_GET['data']) && strlen($_GET['data']) == 8)

or

if (10000000 <= $_GET['data'] && $_GET['data'] <= 99999999)

[onairric]

Hi,

I would like to use eregi so i can immediately check if data submitted is in the correct format. In this case, i'd like to make sure the the value for 'kool' is composed of a set of 8-digit numbers.

// Get bookcode and process data
	if (eregi('[0-9]{8})$', $_GET['kool'])) {
		$bookcode = $_GET['ac'];

		// echo the book code
                    ehco 'the book code is ' . $bookcode;

} else { 
	$bookcode = 'none';
	               echo 'invalid book code';
}

I need help. Im new to this. Please tell me what's wrong and how I can fix it.

Thanks!

[alimadzi]

For starters you should change 'ehco' to 'echo'. I'd also recommend using the preg_ family of functions instead of the ereg family. PCRE is a much better standard for defining regular expressions. Here's the manual entry for preg_match()...

http://us.php.net/manual/en/function.preg-match.php

And here is how you would match 8 digits....

if ( preg_match( '/^\d{8}$/', $_GET['kool'] ) )

Note that case sensitivity is irrelevant when matching digits. Otherwise I would add an 'i' after the slash right before the closing quote in the pattern. That's the PCRE modifier for case-insensitivity.

[NogDog]

I'd probably use a preg_match() (not claiming it's best or fastest, just the way I tend to do things):

$_GET['data'] = trim($_GET['data']); // get rid of leading/trailing white-space
if(preg_match('/^\d{8}$/', $_GET['data']))
{
   // valid 8-digit value
}
else
{
   // not valid
}

[onairric]

hi guys,

thanks for your replies. however, aside from making sure that the value is composed of 8-digits, i'd also like to make sure that it is composed of NUMBERS only. How can we do this?

thanks again in advance

🙂

[onairric]

hi,

tnx for the reply.

btw, the 'ehco' is a typo. 🙂

tnx again!

[NogDog]

onairric wrote:

hi guys,

thanks for your replies. however, aside from making sure that the value is composed of 8-digits, i'd also like to make sure that it is composed of NUMBERS only. How can we do this?

thanks again in advance

🙂

numbers == digits

In preg_*() regular expressions, "\d" means any numeric character from 0 through 9. Therefore, '/^\d{8}$/' means a string of exactly 8 number (i.e.: digits). Depending on exactly what you want:

// must be between 10000000 and 99999999:
if(preg_match('/^[1-9]\d{7}$/', $input))
{
   // valid
}

// must be between 1 and 99999999:
if(preg_match('/^[1-9]\d{0,7}$/', $input))
{
   // valid
}

[NogDog]

Note: I've merged two threads together here, both started by Onairric, since they were both discussing the same thing. The resulting sequence of posts/replies may therefore be a little confusing.

[onairric]

ahhh, sorry about that. tnx for clarifying. =p

[bradgrafelman]

Don't forget to mark this thread resolved (if it is).