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php读取文件内容的方法汇总,

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Release: 2016-06-13 09:16:37
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php读取文件内容的方法汇总,

本文实例汇总了php读取文件内容的方法。分享给大家供大家参考。具体如下:

这里汇总php读取文件内容的五种方法。实际应用当中,请注意关闭 fclose($fp);

第一种方法:fread()

复制代码 代码如下:

$file_path = "test.txt";
if(file_exists($file_path)){
 $fp = fopen($file_path,"r");
 $str = fread($fp,filesize($file_path));//指定读取大小,这里把整个文件内容读取出来
 echo $str = str_replace("\r\n","
",$str);
}
?>


第二种方法:

复制代码 代码如下:

$file_path = "test.txt";
if(file_exists($file_path)){
 $str = file_get_contents($file_path);//将整个文件内容读入到一个字符串中
 $str = str_replace("\r\n","
",$str);
 echo $str;
}
?>


第三种方法:

复制代码 代码如下:

$file_path = "test.txt";
if(file_exists($file_path)){
 $fp = fopen($file_path,"r");
 $str = "";
 $buffer = 1024;//每次读取 1024 字节
 while(!feof($fp)){//循环读取,直至读取完整个文件
  $str .= fread($fp,$buffer);
 }
 $str = str_replace("\r\n","
",$str);
 echo $str;
}
?>


第四种方法:

复制代码 代码如下:

$file_path = "test.txt";
if(file_exists($file_path)){
 $file_arr = file($file_path);
 for($i=0;$i   echo $file_arr[$i]."
";
 }
 /*
 foreach($file_arr as $value){
  echo $value."
";
 }*/
}
?>


第五种方法:

复制代码 代码如下:

$file_path = "test.txt";
if(file_exists($file_path)){
 $fp = fopen($file_path,"r");
 $str ="";
 while(!feof($fp)){
  $str .= fgets($fp);//逐行读取。如果fgets不写length参数,默认是读取1k。
 }
 $str = str_replace("\r\n","
",$str);
 echo $str;
}
?>

希望本文所述对大家的php程序设计有所帮助。

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