Check for white spaces

[SiMZ]

$regS = "0(:space:*)Ss0";
$Str = "0 s0";

if(eregi("$regS", $Str, $printing))
{
$substring=$printing[1];
echo($substring);
}

There could be any number of spaces inbetween 0 and s. But this IF condition never turns true. What is the mistake in the regular expression?

[dalecosp]

Just as an aside, you don't need quotes around the first expression in your [man]eregi/man call.

I'm not sure why this is true, but the [:space:] class won't match " " --- it seems to look for a different character ---

$string1=" ";
$string2=" ";
$reg1="[:space:]";
if (ereg($reg1, $string1)) {
   echo "1 true<br>";
}
if (ereg($reg1, $string2)) {
   echo "2 true<br>";
}

A lot of the guys 'round here seem to use PCRE's instead of POSIX ... maybe someone'll have knowledge of both and give us the answer... 🙂