IntlChar::isIDStart
(PHP 7)
IntlChar::isIDStart — Check if code point is permissible as the first character in an identifier
Описание
Determines if the specified character is permissible as the first character in an identifier according to Unicode (The Unicode Standard, Version 3.0, chapter 5.16 Identifiers).
TRUE
for characters with general categories "L" (letters) and "Nl" (letter numbers).
Список параметров
Возвращаемые значения
Returns TRUE
if
codepoint
may start an identifier, FALSE
if not.
Примеры
Пример #1 Testing different code points
<?php
var_dump(IntlChar::isIDStart("A"));
var_dump(IntlChar::isIDStart("$"));
var_dump(IntlChar::isIDStart("\n"));
var_dump(IntlChar::isIDStart("\u{2603}"));
?>
Результат выполнения данного примера:
bool(true) bool(false) bool(false) bool(false)
Смотрите также
- IntlChar::isalpha() - Check if code point is a letter character
- IntlChar::isIDPart() - Check if code point is permissible in an identifier
IntlChar::PROPERTY_ID_START
- PHP Руководство
- Функции по категориям
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- Справочник функций
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- Internationalization Functions
- IntlChar::charAge
- IntlChar::charDigitValue
- IntlChar::charDirection
- IntlChar::charFromName
- IntlChar::charMirror
- IntlChar::charName
- IntlChar::charType
- IntlChar::chr
- IntlChar::digit
- IntlChar::enumCharNames
- IntlChar::enumCharTypes
- IntlChar::foldCase
- IntlChar::forDigit
- IntlChar::getBidiPairedBracket
- IntlChar::getBlockCode
- IntlChar::getCombiningClass
- IntlChar::getFC_NFKC_Closure
- IntlChar::getIntPropertyMaxValue
- IntlChar::getIntPropertyMinValue
- IntlChar::getIntPropertyValue
- IntlChar::getNumericValue
- IntlChar::getPropertyEnum
- IntlChar::getPropertyName
- 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
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