Easy Easy

[phpretard]

How can I eliminate all but the A from:

 

$var = 'APR32509105205'; // What I have (predetermined)

$var1=A //What I need 

 

Without string replace.

[POG1]

I'm not very good at regex but you could try something like..

 

preg_replace('[^a]','',$var);

[phpretard]

I should clarify...I just need the first charactor.

 

$var could be anything

[lonewolf217]

$var[0];

 

 

[phpretard]

What do you do with $var[0]

[lonewolf217]

$var[0] will contain the first character which is what you want, right?

[phpretard]

I just want the first charactor of any string.

 

$var="ADFKLADHFH" // Strip all but A
or
$var="HKLJHKLDJKL"; // Strip all but H
or
$var="LSDFGKSJFH"; // Strip all but L

 

AND SO ON

[lonewolf217]

i know ..

 

echo $var[0] and see what it contains

[FaT3oYCG]

you would be looking for

 

[pre]

string substr  ( string $string  , int $start  [, int $length  ] )

[/pre]

[phpretard]

I have no idea what to do with this ???

 

string substr  ( string $string  , int $start  [, int $length  ] )

 

I thought it was easy and I was just being ingnorant but could you explain that a little more?

[Maq]

echo substr($var, 0, 1); 

[lonewolf217]

you have two options here

 

$var1 = $var[0];  //sets $var1 to be the first character of the string $var

$var1 = substr($var,0,1);  //same thing

 

 

[POG1]

echo $var[0];

would be a faster alternative

[Yesideez]

Does anyone know if PHP uses null-terminated strings?

 

I'm wondering if treating $var[0] as a string could pose future problems...

[MadTechie]

phpretard read the manual substr if it don't make sense keep reading.. if your still stuck (even after Example #1)! find some tutorials ie PHP 101: PHP For the Absolute Beginner if you don't want to spend the time then try the freelance section!

 

No offence intended!

 

EDIT: PHP doesn't use null-terminated strings, PHP stores the integer length of the string as well

as the data itself, so it knows how long the string is, and doesn't get

fooled by NULL bytes part-way along the string