php使用fopen创建utf8编码文件的方法,
php使用fopen创建utf8编码文件的方法,
本文实例讲述了php使用fopen创建utf8编码文件的方法。分享给大家供大家参考。具体实现方法如下:
一般来说,如果我们直接使用fopen创建会发现文件编码都不是uft-8的了,那么如果要创建uft8文件我们需要进行一些技术处理。具体步骤如下:
使用PHP创建编码格式为utf-8文件的方法:
第一步:新建一个txt文件,打开,文件->另存为xxx.php,并将编码改为UTF-8,保存。
第二部:在php文件中加入如下代码:
复制代码 代码如下:
$filename=rand(100,999).".txt";//定义好要创建的文件名称和文件格式(按需要自己改)
$str = "PHP学习网[www.jb51.net]";//待写入新建文件中的内容
if (!$head=fopen($filename, "w+")) {//以读写的方式打开文件,将文件指针指向文件头并将文件大小截为零,如果文件不存在就自动创建
die("尝试打开文件[".$filename."]失败!请检查是否拥有足够的权限!创建过程终止!");
}
if (fwrite($head,$str)==false) {//执行写入文件
fclose($head);
die("写入内容失败!请检查是否拥有足够的权限!写入过程终止!");
}
echo "成功创建UTF-8格式文件[".$filename."],并向该文件中写入了内容:".$str;
fclose($head);
?>
使用这种方法创建UTF-8编码文件的关键点:
① 保证PHP代码文件本身的编码格式为UTF-8
② php代码文件的编码格式是什么则创建出来的文件编码也是什么
③ 显示出现乱码的问题
控制页面显示的因素主要有三个:
1.HTML代码控制:标准HTML网页文件中的head标签内部包含了这一句代码,代码中charset=utf-8这句就是告诉浏览器要以utf-8格式将网页中的内容显示出来。
2.PHP代码控制:如果在PHP文件的开头加上header("content-Type: text/html; charset=utf-8");这句代码,也是为了告诉浏览器要以utf-8格式将网页中的内容显示出来。(注:这句代码之前不能有类似echo的输出)
3.文件物理存储属性控制:用记事本打开一个文件,文件->另存为,你在“编码”中所看到的就是当前文件的真正的编码
补充一个fopen例子
复制代码 代码如下:
$f=fopen("test.txt", "wb");
$text=utf8_encode("a!");
//先用函数utf8_encode将所需写入的数据变成UTF编码格式。
$text="\xEF\xBB\xBF".$text;
//"\xEF\xBB\xBF",这串字符不可缺少,生成的文件将成为UTF-8格式,否则依然是ANSI格式。
fputs($f, $text);
//写入。
fclose($f);
?>
这样创建出的文件编码格式确实是utf-8,但是放在文件中的汉字出现了乱码的现象,经过一番调试,代码如下:
复制代码 代码如下:
$ctxtsubmit="好呀";
$f=fopen("../".$file, "wb");
//$text=utf8_encode($ctxtsubmit);
//先用函数utf8_encode将所需写入的数据变成UTF编码格式。
$text="\xEF\xBB\xBF".$ctxtsubmit;
//"\xEF\xBB\xBF",这串字符不可缺少,生成的文件将成为UTF-8格式,否则依然是ANSI格式。
fputs($f, $text);
//写入。
fclose($f);
?>
希望本文所述对大家的PHP程序设计有所帮助。

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