Problem with regular expression and preg_match

[splodge]

I have a simple regular expression:

[0-9]{1,5}x[0-9]{1,5}

Which is designed to detect the width and height of an image from a
string, as in:

foo 100x100 bar

However, when I run this with preg_match I get an unknown modifier
error, pointing to { . Could someone please explain what I am doing
wrong and how to make this work.

preg_match("[0-9]{1,5}x[0-9]{1,5}", $output, $widthHeight);

$output is the string containing the width height values
$widthHeight is the returning array.
Many thanks.

P.s. Maximum image size is 99999x99999

[Scott]

On Tue, 2006-03-21 at 20:39 +0000, splodge wrote:

I have a simple regular expression:

[0-9]{1,5}x[0-9]{1,5}

Which is designed to detect the width and height of an image from a
string, as in:

foo 100x100 bar

However, when I run this with preg_match I get an unknown modifier
error, pointing to { . Could someone please explain what I am doing
wrong and how to make this work.

preg_match("[0-9]{1,5}x[0-9]{1,5}", $output, $widthHeight);

$output is the string containing the width height values
$widthHeight is the returning array.
Many thanks.

P.s. Maximum image size is 99999x99999

Try enclosing your expression with / /.
preg_match("/[0-9]{1,5}x[0-9]{1,5}/", $output, $widthHeight);

[bobzimuta]

what about the case where an image size starts with 0 (i.e. 0999x0111)
which can cause wackiness since the number will be converted to octal.
Maybe this? p.s. \d == [0-9]

preg_match("[1-9]\d{0,4}x[1-9]\d{0,4}", $output, $widthHeight);