[help] php

[JayNZ]

Hey could someone please fix this code for me,

I get a 500 - Internal server error.
When i use the code i made below

$u = mysql_real_escape_string( strip_tags( $_GET["user"],NULL,NULL,NULL,15);

 

[Markshall]

Why won't this just do:

$u = mysql_real_escape_string( strip_tags( $_GET['user'] ) );

 

[JayNZ]

I want to limit it so only 15 letters can be incoming.

 

[Kryptos]

@OP, you're missing a ')'.

 

[Dayron1234]

You missed a ) in your coding so that is probably why?

 

[Markshall]

Well what about:

<?php
$u = mysql_real_escape_string( strip_tags( $_GET['user'] ) );
if( strlen( $u ) > 15 )
{
	echo "cant be more than 15";
}
else
{
	//rest of code here.
}
?>

 

[JayNZ]

Wow thanks for the quick replys :]
And thanks to Kryptos.
--- edit ---
Theres no error, but its not showing anything..
index.php?user=JayNZ
shows the default text, but thats it.

 

[Kryptos]

$u = mysql_real_escape_string(strip_tags($_GET['user']));

if(strlen($u) > 15 || !isset($u))
{
 echo 'invalid name';
}
else
{
echo $u;
}

Try that.

 

[JayNZ]

M0nstas code sorta works..
How can i make it so if its abcdefghijklmn123456789
and it was limited to 4 it would only show
abcd ?

 

[Kryptos]

M0nstas code sorta works..
How can i make it so if its abcdefghijklmn123456789
and it was limited to 4 it would only show
abcd ?

$u = mysql_real_escape_string(strip_tags($_GET['user']));

if(!isset($u))
{
 echo 'cannot find user';
}
else
{
echo substr($u, 0, 15); //Will limit to 15
}

Use that.

 

[RastaLulz]

M0nstas code sorta works..
How can i make it so if its abcdefghijklmn123456789
and it was limited to 4 it would only show
abcd ?

<?php
if(isset($_GET['user'])) {
  if(strlen($_GET['user']) > 15 || strlen($_GET['user']) < 1) {
	  echo 'Sorry, but your username must be one to 15 characters long.';
  }else if($_GET['user'] != preg_replace('/[^a-zA-Z0-9]/', '', $_GET['user'])) {
  	echo 'Sorry, but your username can only contain letters and numbers.';
  }else{
   	//run success code
  }
}