PHP funtion to remove non a to z

[nish.patel]

Hi all,

 

I am a newbie so please go gentle... I am trying to get a function to work for my application i have been learning PHP by watch Kevin Skoglund's videos etc but I cannot find a solution for this. I have been googling frantically but no joy hence you guys are my only option now. Below is the snippet of code that I have tried to get it to work but no joy can anyone show me how its done thanks...

 

what i am trying to do is to input "BA'3Ndf$%^A&*(nN)A" and trying to return BANANA in PHP:

 

function remove_nonAtoZ($input) {
$input = preg_replace('#[^\d]#', $input);

$input = "BA'3Ndf$%^A&*(nN)A";
$output = "BANANA";
return $output;
}

 

[Alex]

~[^A-Z]~ will work.

 

function remove_nonAtoZ($input) {
return preg_replace('~[^A-Z]~', '', $input);
}

 

edit: In preg_replace you also need to specify the replacement, which you forgot.

[thebadbad]

Look up preg_replace() in the manual, it takes three parameters at minimum.

[nish.patel]

wow thanks for the quick reply... I have tried this and get a blank screen:

 

function remove_nonAtoZ($input) {
return preg_replace('~[^A-Z]~', '', $input);

$input = "BA'3Ndf$%^A&*(nN)A";
   	$output = "BANANA";
   	return $output;
}


[\code]

[rajivgonsalves]

it should have been

<?php
function remove_nonAtoZ($input) {
    return preg_replace('#[^A-Z]#', '', $input);
}   

$input = "BA'3Ndf$%^A&*(nN)A";

echo remove_nonAtoZ($input);

?>

[Alex]

You should do some research about how functions work and how to utilize them, check out the manual. The way to use this function would be like so:

 

function remove_nonAtoZ($input) {
return preg_replace('~[^A-Z]~', '', $input);
}

echo remove_nonAtoZ("BA'3Ndf$%^A&*(nN)A");

[nish.patel]

thank you all for reply this is great help for a bright path to learn php and their functions