mb_convert_case

mb_convert_case

(PHP 4 >= 4.3.0, PHP 5)

mb_convert_casePerform case folding on a string

说明

string mb_convert_case ( string $str , int $mode = MB_CASE_UPPER [, string $encoding = mb_internal_encoding() ] )

Performs case folding on a string, converted in the way specified by mode.

参数

str

The string being converted.

mode

The mode of the conversion. It can be one of MB_CASE_UPPER, MB_CASE_LOWER, or MB_CASE_TITLE.

encoding

encoding 参数为字符编码。如果省略,则使用内部字符编码。

返回值

A case folded version of string converted in the way specified by mode.

Unicode

By contrast to the standard case folding functions such as strtolower() and strtoupper(), case folding is performed on the basis of the Unicode character properties. Thus the behaviour of this function is not affected by locale settings and it can convert any characters that have 'alphabetic' property, such as A-umlaut (Ä).

For more information about the Unicode properties, please see » http://www.unicode.org/unicode/reports/tr21/.

范例

Example #1 mb_convert_case() example

<?php
$str 
"mary had a Little lamb and she loved it so";
$str mb_convert_case($strMB_CASE_UPPER"UTF-8");
echo 
$str// Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
$str mb_convert_case($strMB_CASE_TITLE"UTF-8");
echo 
$str// Prints Mary Had A Little Lamb And She Loved It So
?>

Example #2 mb_convert_case() example with non-Latin UTF-8 text

<?php
$str 
"Τάχιστη αλώπηξ βαφής ψημένη γη, δρασκελίζει υπέρ νωθρού κυνός";
$str mb_convert_case($strMB_CASE_UPPER"UTF-8");
echo 
$str// Prints ΤΆΧΙΣΤΗ ΑΛΏΠΗΞ ΒΑΦΉΣ ΨΗΜΈΝΗ ΓΗ, ΔΡΑΣΚΕΛΊΖΕΙ ΥΠΈΡ ΝΩΘΡΟΎ ΚΥΝΌΣ
$str mb_convert_case($strMB_CASE_TITLE"UTF-8");
echo 
$str// Prints Τάχιστη Αλώπηξ Βαφήσ Ψημένη Γη, Δρασκελίζει Υπέρ Νωθρού Κυνόσ
?>

参见


  • mb_check_encoding
  • mb_convert_case
  • mb_convert_encoding
  • mb_convert_kana
  • mb_convert_variables
  • mb_decode_mimeheader
  • mb_decode_numericentity
  • mb_detect_encoding
  • mb_detect_order
  • mb_encode_mimeheader
  • mb_encode_numericentity
  • mb_encoding_aliases
  • mb_ereg
  • mb_eregi
  • mb_eregi_replace
  • mb_ereg_match
  • mb_ereg_replace
  • mb_ereg_search
  • mb_ereg_search_getpos
  • mb_ereg_search_getregs
  • mb_ereg_search_init
  • mb_ereg_search_pos
  • mb_ereg_search_regs
  • mb_ereg_search_setpos
  • mb_get_info
  • mb_http_input
  • mb_http_output
  • mb_internal_encoding
  • mb_language
  • mb_list_encodings
  • mb_output_handler
  • mb_parse_str
  • mb_preferred_mime_name
  • mb_regex_encoding
  • mb_regex_set_options
  • mb_send_mail
  • mb_split
  • mb_strcut
  • mb_strimwidth
  • mb_stripos
  • mb_stristr
  • mb_strlen
  • mb_strpos
  • mb_strrchr
  • mb_strrichr
  • mb_strripos
  • mb_strrpos
  • mb_strstr
  • mb_strtolower
  • mb_strtoupper
  • mb_strwidth
  • mb_substitute_character
  • mb_substr
  • mb_substr_count
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