ctype_lower

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

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

Result: The string aac123 does not consist of all lowercase letters. The string qiutoas consists of all lowercase letters. The string QASsdks does not consist of all lowercase letters.
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PHP Version:


Function ctype_lower:

Character type checking Functions

Most used PHP functions