Php - How to use ctype function, Validate numeric or sting value

How to use ctype function

How to validate the given string using ctype function?

Normally I used to use preg function to validate the string. Some days ago I rad in php manual that the preg function is slower than other validating function, but still has its own pons and cons. Today I came across a new function called ctype which ca be used to validate the arguments or string. The ctype_alnum is used to calculate the alpha numeric characters and ctype_digit is used to validate the numiric values. Hope the below example will giva you an idea about the ctype function.

$word="w3calculator";
if(ctype_alnum($word))
echo "has alpha numeric characters";
else
echo "has no alphanumerica characters";

The topic on Php - How to use ctype function is posted by - Math

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