IntlChar::toupper

(PHP 7, PHP 8)

IntlChar::toupper — Make Unicode character uppercase

说明

public static IntlChar::toupper(int|string $codepoint): int|string|null

The given character is mapped to its uppercase equivalent. If the character has no uppercase equivalent, the character itself is returned.

参数

codepoint: The int codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

返回值

Returns the Simple_Uppercase_Mapping of the code point, if any; otherwise the code point itself.

The return type will be int unless the code point was passed as a UTF-8 string, in which case a string will be returned.

范例

示例 #1 Testing different code points


<?php
var_dump(IntlChar::toupper("A"));
var_dump(IntlChar::toupper("a"));
var_dump(IntlChar::toupper("Φ"));
var_dump(IntlChar::toupper("φ"));
var_dump(IntlChar::toupper("1"));
var_dump(IntlChar::toupper(ord("A")));
var_dump(IntlChar::toupper(ord("a")));
?>

以上例程会输出：

string(1) "A"
string(1) "A"
string(2) "Φ"
string(2) "Φ"
string(1) "1"
int(65)
int(65)

参见

IntlChar::tolower() - Make Unicode character lowercase
IntlChar::totitle() - Make Unicode character titlecase
mb_strtoupper() - 使字符串大写

add a note

User Contributed Notes

There are no user contributed notes for this page.

官方地址：https://www.php.net/manual/en/intlchar.toupper.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络 JAVA NoSQL 数据库面试 C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet ADORecordSet对象 adodb手册 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 opcache预加载 Composer的Packagist资源 mysql面试题 PHP7添加redis扩展 [鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式 PHP获取指定函数定义在哪个文件中及行号 Packagist / Composer 中国全量镜像 PHP mkdir()写出来的权限与mode值不符合常用的php ADODB使用方法集锦 adodb连接mysql多个数据库的问题

略微加速

PHP官方手册 - 互联网笔记

IntlChar::toupper

说明

参数

返回值

范例

参见

User Contributed Notes