PHP Five ways to read file contents

PHP Five ways to read file contents

Share the Five ways PHP reads the contents of a file: All right, when you're done, you'll find that the files are not closed. In practical application, please pay attention to closing fclose ($FP);
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PHP Read File contents:

-----The first Method-----fread ()--------

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<?php$file_path = "test.txt";if(file_exists($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 $str = str_replace("\r\n","<br />",$str);}?>

--------the second method------------

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

-----The third method------------

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<?php$file_path = "test.txt";if(file_exists($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);} $str = str_replace("\r\n","<br />",$str);echo $str;}?>

-------the fourth method of--------------

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<?php$file_path = "test.txt";if(file_exists($file_path)){$file_arr = file($file_path);for($i=0;$i<count($file_arr);$i++){//逐行读取文件内容echo $file_arr[$i]."<br />";}/*foreach($file_arr as $value){echo $value."<br />";}*/}?>

----The fifth method of--------------------

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<?php$file_path = "test.txt";if(file_exists($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。}$str = str_replace("\r\n","<br />",$str);echo $str;}?>

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PHP Five ways to read file contents