$variable[x]... does it work?

[sebbothebutcher]

hi! it's me again with a problem... i have a function that should go throgh a string and check every of its 250 characters if there is either "<" or ">" in one or more of them... now the function looks like this:

function clean($string)
{
$c_string[250] = $string;
$x = 0;
while($x <= 250)
{
if($c_string[x] == "<" ¦¦ $c_string[x] == ">")
{
echo "Your entry/username contained illegal characters!";
exit();
}
$x++;
}
}

i've guessed this from my little knowledge of c and c++... can anybody tell me, why it doesn't work? or if it's even possible to write something like this in php? thanks in advance!

[WhosAWhata]

why 250?
function clean($string) {
for($x=0,$x<=250;$x++){
if(($string[x] == "<") ¦¦ ($string[x] == ">")) {
echo "Your entry/username contained illegal characters!";
exit();
}
}
}

if you don't care about the legnth (250)

function clean($string) {
if ((ereg("<",$string)) ¦¦ (ereg(">",$string))) {
echo "Your entry/username contained illegal characters!";
exit();
}
}

[sebbothebutcher]

okay thanks... it's working now! the 250 length is from an older version, sorry... i've worked around that bit already! your script could help me! thanks for your help!

[DevlshOne]

You could also use:

function clean($string) {
 if ((strpos($string,">")>0) ¦¦ ((strpos($string,"<")>0)) echo "Your entry/username contained illegal characters!";
}

[WhosAWhata]

i suppose that would work...interesting idea

[WhosAWhata]

by the way in my earlier post i made a mistake

function clean($string) {
for($x=0,$x<=250;$x++){
if(($string[x] == "<") ¦¦ ($string[x] == ">")) {
echo "Your entry/username contained illegal characters!";
exit();
}
}
}

should be

function clean($string) {
for($x=0,$x<=250;$x++){
if(($string[$x] == "<") ¦¦ ($string[$x] == ">")) {
echo "Your entry/username contained illegal characters!";
exit();
}
}
}

[WhosAWhata]

o and DevlshOne
there are tons of other ways
preg_match
if(str_replace
and many more
the great thing about PHP is the myriad of methods to get the job done