Question

I am trying to use the following regular expression to check whether a string is a positive number with either zero decimal places, or 2:

^\d+(\.(\d{2}))?$

When I try to match this using preg_match, I get the error:

Warning: preg_match(): No ending delimiter ‘^’ found in /Library/WebServer/Documents/lib/forms.php on line 862

What am I doing wrong?

Answer 1

The error is about delimiter missing that is / or #, etc, make sure that you wrap regex expression in delimiters:

if (preg_match('/^\d+(\.(\d{2}))?$/', $text))
{
 // more code
 return true;
}

Or:

if (preg_match('#^\d+(\.(\d{2}))?$#', $text))
{
 // more code
 return true;
}