(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+01C4var_dump(IntlChar::istitle("DŽ"));// Latin Capital Letter D with Small Letter Z with Caron U+01C5var_dump(IntlChar::istitle("Dž"));// Latin Small Letter Dz with Caron U+01C6var_dump(IntlChar::istitle("dž"));// Greek Capital Letter Alpha with Prosgegrammeni U+1FBCvar_dump(IntlChar::istitle("ᾼ"));// Greek Small Letter Alpha with Ypogegrammeni U+1FB3var_dump(IntlChar::istitle("ᾳ"));// Greek Capital Letter Alpha U+0391var_dump(IntlChar::istitle("Α"));?>
The above example will output:
bool(false) bool(true) bool(false) bool(true) bool(false) bool(false)