(PHP 4, PHP 5, PHP 7)
strtoupper — 锟斤拷锟街凤拷锟斤拷转锟斤拷为锟斤拷写
$string
) : string
锟斤拷 string
锟斤拷锟斤拷锟叫碉拷锟斤拷母锟街凤拷转锟斤拷为锟斤拷写锟斤拷锟斤拷锟截★拷
注锟斤拷 "锟斤拷母" 锟诫当前锟斤拷锟斤拷锟斤拷锟斤拷锟叫关★拷锟斤拷锟界,锟斤拷默锟较碉拷 "C" 锟斤拷锟斤拷锟街凤拷 umlaut-a锟斤拷?锟斤拷锟酵诧拷锟结被转锟斤拷锟斤拷
string
锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷
锟斤拷锟斤拷转锟斤拷锟斤拷拇锟叫达拷址锟斤拷锟斤拷锟�
Example #1 strtoupper() 锟斤拷锟斤拷
<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = strtoupper($str);
echo $str; // 锟斤拷印 MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>
Note: 锟剿猴拷锟斤拷锟缴帮拷全锟斤拷锟节讹拷锟斤拷锟狡讹拷锟斤拷