ctype_alpha

PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8
ctype_alpha - Check for alphabetic character(s)
Manual
Code Examples

Example #1 A ctype_alpha example (using the default locale)

Result: The string KjgWZC consists of all letters. The string arf12 does not consist of all letters.
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Function ctype_alpha:

Character type checking Functions

Most used PHP functions