(PHP 7, PHP 8)
IntlChar::istitle — Check 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 points
<?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"));
// Greek Capital Letter Alpha with Prosgegrammeni U+1FBC
var_dump(IntlChar::istitle("ᾼ"));
// Greek Small Letter Alpha with Ypogegrammeni U+1FB3
var_dump(IntlChar::istitle("ᾳ"));
// Greek 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)