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PHP如何使用IntlChar charType()函数（）

IT知识函数php

IntlChar :: charType()function是PHP中的内置函数, 用于获取代码点的常规类别值。此函数返回代码点的常规类别值。
语法如下：

int IntlChar::charType ( $codepoint )

参数：该函数接受单个参数$ codepoint这是强制性的。的$ codepoint值是整数值或字符, 被编码为UTF-8串。
返回值：此函数返回以下列出的常规类别内容：
  • IntlChar :: CHAR_CATEGORY_UNASSIGNED
  • IntlChar :: CHAR_CATEGORY_GENERAL_OTHER_TYPES
  • IntlChar :: CHAR_CATEGORY_UPPERCASE_LETTER
  • IntlChar :: CHAR_CATEGORY_LOWERCASE_LETTER
  • IntlChar :: CHAR_CATEGORY_TITLECASE_LETTER
  • IntlChar :: CHAR_CATEGORY_MODIFIER_LETTER
  • IntlChar :: CHAR_CATEGORY_OTHER_LETTER
  • IntlChar :: CHAR_CATEGORY_NON_SPACING_MARK
  • IntlChar :: CHAR_CATEGORY_ENCLOSING_MARK
  • IntlChar ：： CHAR_CATEGORY_COMBINING_SPACING_MARK
  • IntlChar :: CHAR_CATEGORY_DECIMAL_DIGIT_NUMBER
  • IntlChar :: CHAR_CATEGORY_LETTER_NUMBER
  • IntlChar :: CHAR_CATEGORY_OTHER_NUMBER
  • IntlChar :: CHAR_CATEGORY_SPACE_SEPARATOR
  • IntlChar :: CHAR_CATEGORY_LINE_SEPARATOR
  • IntlChar :: CHAR_CATEGORY_PARAGRAPH_SEPARATOR
  • IntlChar :: CHAR_CATEGORY_CONTROL_CHAR
  • IntlChar :: CHAR_CATEGORY_FORMAT_CHAR
  • IntlChar :: CHAR_CATEGORY_PRIVATE_USE_CHAR
  • IntlChar :: CHAR_CATEGORY_SURROGATE
  • IntlChar :: CHAR_CATEGORY_DASH_PUNCTUATION
  • IntlChar :: CHAR_CATEGORY_START_PUNCTUATION
  • IntlChar :: CHAR_CATEGORY_END_PUNCTUATION
  • IntlChar :: CHAR_CATEGORY_CONNECTOR_PUNCTUATION
  • IntlChar :: CHAR_CATEGORY_OTHER_PUNCTUATION
  • IntlChar :: CHAR_CATEGORY_MATH_SYMBOL
  • IntlChar :: CHAR_CATEGORY_CURRENCY_SYMBOL
  • IntlChar :: CHAR_CATEGORY_MODIFIER_SYMBOL
  • IntlChar :: CHAR_CATEGORY_OTHER_SYMBOL
  • IntlChar :: CHAR_CATEGORY_INITIAL_PUNCTUATION
  • IntlChar :: CHAR_CATEGORY_FINAL_PUNCTUATION
  • IntlChar :: CHAR_CATEGORY_CHAR_CATEGORY_COUNT
下面的程序说明了IntlChar :: charType()PHP中的功能：
程序1：
< ?php// PHP code to illustrate IntlChar::charType() // function// Input data is character type var_dump(IntlChar::charType( "A" ) === IntlChar::CHAR_CATEGORY_UPPERCASE_LETTER); // Input data is character type var_dump(IntlChar::charType( "." ) === IntlChar::CHAR_CATEGORY_OTHER_PUNCTUATION); // Input data is character type var_dump(IntlChar::charType( "\t" ) === IntlChar::CHAR_CATEGORY_CONTROL_CHAR); // Input data is unicode character var_dump(IntlChar::charType( "\u{2603}" ) === IntlChar::CHAR_CATEGORY_OTHER_SYMBOL); // Input data is string type var_dump(IntlChar::charType( "ABC" ) === IntlChar::CHAR_CATEGORY_OTHER_PUNCTUATION); // Input data is character type var_dump(IntlChar::charType( "\n" ) === IntlChar::CHAR_CATEGORY_CONTROL_CHAR); ?>

输出如下：
bool(true) bool(true) bool(true) bool(true) bool(false) bool(true)

程式2：
< ?php// PHP code to illustrate IntlChar::charType() // function// Input data is character type var_dump(IntlChar::charType( "A" )); // Input data is character type var_dump(IntlChar::charType( "." )); // Input data is character type var_dump(IntlChar::charType( "\t" )); // Input data is unicode character var_dump(IntlChar::charType( "\u{2603}" )); // Input data is string type var_dump(IntlChar::charType( "ABC" )); // Input data is character type var_dump(IntlChar::charType( "\n" )); ?>

输出如下：
int(1) int(23) int(15) int(27) NULL int(15)

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参考： http://php.net/manual/en/intlchar.chartype.php

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