一、写入文件:
$fp = fopen(filename, mode);
mode 为打开文件方式比如 ‘a+’表示读写文件,文件不存在则创建,新数据主加到文件尾部
fwrite($fp,
写入内容);
fclose($fp);
二、锁定文件:当有多个用户同时对文件操作时保证不出现冲突
fclock($fp, 锁定类型); //锁定类型包括写入独享、读取共享……
三、读取文件:
$data = file(‘文件路径‘);
将读取的数据放到data数组内,每个元素为文件的一行。
编码测试:ws.php:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>test</title><base> </head> <body> <?php if (isset($_POST['submitted'])) { if (!empty($_POST['quote']) && ($_POST['quote'] != "enter your quotation here")){//Write the data to file. $fp = fopen('../test.txt','a+'); flock($fp, LOCK_EX);// lock the file fwrite($fp, $_POST['quote']); flock($fp, LOCK_UN);// unlock fclose($fp); //read the file's content to an array $data: $data = file('../test.txt'); print '<p style = "color: red;"> data[0]:\n ' .$data[0]. '</p>'; } else{ print 'please enter your quotation'; } } ?> <form action='ws.php' method='POST'> <textarea name="quote" rows="5" cols="30">enter your quotation here</textarea> <input type="submit" name="submit" value="Add this code"/> <input type="hidden" name="submitted" value="true"/> </form> <div><p>This is the foot of the document</p></div> </body> </html>
测试裁图:
起始:
结果:
五、处理文件上传:
1.form标签必须包含:enctype="multipart/form-data",表单必须用post方法
2.必须添加一个隐藏输入框,建议浏览器最大上传文件大小(以字节计)
3.创建表单字段<input type="file" name="thefile" />
代码测试:ws.php:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>test</title><base> </head> <body> <?php if (isset($_POST['submitted'])) { if (move_uploaded_file($_FILES['thefile']['tmp_name'],"../uploads/{$_FILES['thefile']['name']}")){ print '<p>your file is upload!</P>'; } else{ $errors = $_FILES['thefile']['error']; print $errors; } } ?> <form action='ws.php' enctype="multipart/form-data" method='POST'> <p>Upload a file</p> <input type="hidden" name="MAX_FILE_SIZE" value="3000"/> <p><input type="file" name="thefile" /></p> <input type="submit" name="submit" value="UPload"/> <input type="hidden" name="submitted" value="true"/> </form> <div><p>This is the foot of the document</p></div> </body> </html>
六、目录
1.导航目录:
查找目录中所有内容:scandir();
eg: $stuff = scandir(‘目录名‘);//函数返回一个数组,包含目录中的文件和目录,复制给$stuff
2.创建目录:
mkdir( ‘路径名‘ );
时间: 2024-10-20 09:05:44