IntlChar::isalpha
(PHP 7)
IntlChar::isalpha — Check if code point is a letter character
Описание
Determines whether the specified code point is a letter character. TRUE for general categories "L" (letters).
Список параметров
Возвращаемые значения
Returns TRUE if
codepoint is a letter character, FALSE if not.
Примеры
Пример #1 Testing different code points
<?php
var_dump(IntlChar::isalpha("A"));
var_dump(IntlChar::isalpha("1"));
var_dump(IntlChar::isalpha("\u{2603}"));
?>
Результат выполнения данного примера:
bool(true) bool(false) bool(false)
Смотрите также
- IntlChar::isalnum() - Check if code point is an alphanumeric character
- IntlChar::isdigit() - Check if code point is a digit character
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- IntlChar::charAge
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- IntlChar::charDirection
- IntlChar::charFromName
- IntlChar::charMirror
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- IntlChar::getBidiPairedBracket
- IntlChar::getBlockCode
- IntlChar::getCombiningClass
- IntlChar::getFC_NFKC_Closure
- IntlChar::getIntPropertyMaxValue
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- IntlChar::getPropertyValueEnum
- IntlChar::getPropertyValueName
- IntlChar::getUnicodeVersion
- IntlChar::hasBinaryProperty
- IntlChar::isalnum
- IntlChar::isalpha
- IntlChar::isbase
- IntlChar::isblank
- IntlChar::iscntrl
- IntlChar::isdefined
- IntlChar::isdigit
- IntlChar::isgraph
- IntlChar::isIDIgnorable
- IntlChar::isIDPart
- IntlChar::isIDStart
- IntlChar::isISOControl
- IntlChar::isJavaIDPart
- IntlChar::isJavaIDStart
- IntlChar::isJavaSpaceChar
- IntlChar::islower
- IntlChar::isMirrored
- IntlChar::isprint
- IntlChar::ispunct
- IntlChar::isspace
- IntlChar::istitle
- IntlChar::isUAlphabetic
- IntlChar::isULowercase
- IntlChar::isupper
- IntlChar::isUUppercase
- IntlChar::isUWhiteSpace
- IntlChar::isWhitespace
- IntlChar::isxdigit
- IntlChar::ord
- IntlChar::tolower
- IntlChar::totitle
- IntlChar::toupper
Коментарии
Not sure why, but on my system (Windows 10), the escape string for Unicode must be delimited by double-quotes, not single quotes. E.g.
// this returns NULL
IntlChar::isalpha('\u{00E9}');
// this returns TRUE
IntlChar::isalpha("\u{00E9}");