PHP如何使用IntlChar charType()函数？

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)

相关文章：

• PHP | IntlChar :: charDigitValue()函数
• PHP | IntlChar isMirrored()函数
• PHP | IntlChar :: isspace()函数

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

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