Regular Expression Help for Date Validation - dd/mm/yyyy - PHP

I think you should escape the slashes /^[0-9]{1,2}\/[0-9]{1,2}\/[0-9]{4}$/

You need to escape the slash since you are using it as regex delimiter

/^[0-9]{1,2}\/[0-9]{1,2}\/[0-9]{4}$/

or use different regex delimiters

#^[0-9]{1,2}/[0-9]{1,2}/[0-9]{4}$#

You can also use this one:

([0-2]\d|3[0-1])\/(0\d|1[0-2])\/(19|20)\d{2}

if you want to differentiate between dates and months, but also validate only 2 centuries.

Related