Eregi

[verdrm]

Can someone type up how this should look?

 

I want to validate a form field only allowing A-Z,a-z,0-9, but I think my syntax is wrong. My code is this:

 

$post=htmlentities($_POST['name']);

 

if(eregi("^[-a-z0-9]$",$post)) {

 

//do stuff

 

}else{echo "Error";}

 

Everything besides A-Z,a-z,0-9 should be stopped and the error shown.

 

[redarrow]

here you go........

<?php

$word="my name is redarrow and i  - 009 love php"; // incorrect.

//$word="my name is redarrow and i   009 love php"; // correct.

$a=explode(' ',$word);

foreach($a as $b){

if(!eregi("^[a-z]{0,100}[0-9]{0,100}$",$b)){

echo"correct";
exit;
}else{
echo "not correct";
exit;
}
}
?>

 

[verdrm]

Maybe I need to understand this better...

 

My code:

 

$post=htmlentities($_POST['name']);

 

if(eregi("^[-a-z0-9]$",$post)) {

 

If the form field is "NAME:" and I type in "VERDRM" and hit "Submit", the code I need should allow that text to pass. But, if I type in "VERDRM>", it should echo an error.

[verdrm]

Anyone have any ideas?

[hitman6003]

$input = 'VERDRM';
$input2 = 'VERDRM<';

$pattern = '/^[A-Za-z0-9]+$/';

if (!preg_match($pattern, $input)) {
  echo "ERROR: " . $input . " is not a valid value";
}

if (!preg_match($pattern, $input2)) {
  echo "ERROR: " . $input2 . " is not a valid value";
}