在PHP中将字符转为大写的函数是“strtoupper()”，该函数的作用是将字符串转化为大写，语法为“strtoupper(string $string)”，返回值为转换后的大写字符串。幼儿园设计
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示例代码
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<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = strtoupper($str);
echo $str;
?>
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使用示例
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<?php
define("LATIN1_UC_CHARS", "ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝ");
define("LATIN1_LC_CHARS", "àáâãäåæçèéêëìíîïðñòóôõöøùúûüý");
function uc_latin1 ($str) {
$str = strtoupper(strtr($str, LATIN1_LC_CHARS, LATIN1_UC_CHARS));
return strtr($str, array("ß" => "SS"));
}
?>
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<?php
function strtoupper_utf8($string){
$string=utf8_decode($string);
$string=strtoupper($string);
$string=utf8_encode($string);
return $string;
}
?>
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