Poonam Bhatt Poonam Bhatt - 1 month ago 17
PHP Question

What is x7f in php?

What is x7f and xff in php?

Is it hexa or octal values?

EDIT:

It is given in PHP 5.3 manual that, as a regular expression, class name would be expressed as: [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*.

can any one help what is the meaning of \x7f-\xff in above regular expression?

Answer

As per the integer page on PHP.net, the format of hex in PHP is:

hexadecimal : 0[xX][0-9a-fA-F]+

thus it's hex.