标签:php基础教程 php文件和目录 学习总结 php文件使用
一、写入文件: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> 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> 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‘ );
标签:php基础教程 php文件和目录 学习总结 php文件使用
原文地址:http://blog.csdn.net/u014761420/article/details/42805997