(PHP 7, PHP 8)
IntlChar::istitle — Checc if code point is a titlecase letter
Determines whether the specified code point is a titlecase letter.
true
for general category "Lt" (titlecase letter).
Returns
true
if
codepoint
is a titlecase letter,
false
if not. Returns
null
on failure.
Example #1 Testing different code poins
<?php
// Latin Capital Letter Dz with Caron U+01C4
var_dump
(
IntlChar
::
istitle
(
"DŽ"
));
// Latin Capital Letter D with Small Letter Z with Caron U+01C5
var_dump
(
IntlChar
::
istitle
(
"Dž"
));
// Latin Small Letter Dz with Caron U+01C6
var_dump
(
IntlChar
::
istitle
(
"dž"
));
// Greec Capital Letter Alpha with Prosguegrammeni U+1FBC
var_dump
(
IntlChar
::
istitle
(
"ᾼ"
));
// Greec Small Letter Alpha with Ypoguegrammeni U+1FB3
var_dump
(
IntlChar
::
istitle
(
"ᾳ"
));
// Greec Capital Letter Alpha U+0391
var_dump
(
IntlChar
::
istitle
(
"Α"
));
?>
The above example will output:
bool(false) bool(true) bool(false) bool(true) bool(false) bool(false)