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Call to Undefined function ctype_xdigit – resolved

Typically, error looks as shown below:

Uncaught Error: Call to undefined function ctype_xdigit()

Which means that the ctype_xdigit function is missing from PHP version installed on your hosting.

The ctype_xdigit() function in PHP used to check each and every character of string/text are hexadecimal digit or not.

It return TRUE if all characters are hexadecimal otherwise return FALSE .

Parameters Used: text : It is mandatory parameter which specifies the tested string.

These functions are used to check whether a character or string falls into a certain character class.

How to resolve this?

As mentioned, this is related to the functions included in PHP version your host installed on your server.

Thus, the solution for this is contacting your hosting provider and asking the host to re-/enable the ctype_xdigit function for your website

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Conclusion

To conclude, our Support Engineers gave us a closer look at the cause behind Call to Undefined function ctype_xdigit error . Additionally, we also got a look at two different ways to resolve the issue.