array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'intlchar.istitle.php', 1 => 'IntlChar::istitle', ), 'up' => array ( 0 => 'class.intlchar.php', 1 => 'IntlChar', ), 'prev' => array ( 0 => 'intlchar.isspace.php', 1 => 'IntlChar::isspace', ), 'next' => array ( 0 => 'intlchar.isualphabetic.php', 1 => 'IntlChar::isUAlphabetic', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/intl/intlchar/istitle.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(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).
示例 #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"));
?>
以上示例会输出:
bool(false) bool(true) bool(false) bool(true) bool(false) bool(false)