W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
<!DOCTYPE html> <html> <body> <p>在字符串 "Hello good world!" 中搜索值 "WORLD" 并将其替换为 "Bill"：</p> <?php echo str_ireplace("WORLD","Bill","Hello good world!"); ?> </body> </html>