read through string and extract

[point86]

Hi,

 

I have a string, retrived via

 

$file = $_GET['filename'];

 

Now, how to I create a condition (preferably a loop) that says

 

1. read through the string, letter by letter

2. if (letter in question = "X")

{do Y}

else {do X}

 

Thanks

P86

[kenrbnsn]

A string can be treated as an array:

<?php
$file = $_GET['filename'];
for ($i=0;$i<strlen($file);$i++) {
    if ($file[$i] == 'X') {
//
//    do X
//
    } else {
//
//    do Y
//
    }
}
?>

 

Ken

[per1os]

<?php
$file = $_GET['filename'];
if (ereg("X", $file)) {
  // do this
}else {
//do this
}
?>

 

That is one way, not sure if that is the way you want?