我逐行读取一个 txt 文件的内容,
但是每个文件第一行总是不能正确识别,
请问怎么做呢?

    $rTxt = fopen( $sTxt  ,"r" );
    
    while( $str = fgets($rTxt) )
    {
    
        $arr = explode( ',' , $str );
        Var_Dump( $arr[0] );
    }
    
    fclose( $rTxt );

txt 文件内容:

1393592460,10680,10660,10650,10720,6040,3.227103E+08,0,0,108,4746,0,0
1393592520,10656,10697,10656,10701,4888,2.612444E+08,0,0,203,6858,0,0
1393592580,10697,10672,10672,10700,1294,6.911194E+07,0,0,281,7086,0,0
1393592640,10671,10667,10661,10675,1706,9.101747E+07,0,0,354,7590,0,0
1393592700,10669,10650,10648,10670,2340,1.246486E+08,0,0,448,8664,0,0
1393592760,10652,10640,10632,10656,1938,1.031578E+08,0,0,545,9282,0,0
1393592820,10641,10657,10641,10662,1746,9.297165E+07,0,0,631,8922,0,0
......

每次读取的时候,文件第一行的第一个数字长度总是不对,应该有个看不见的字符串..:

string(13) "1393592460"
string(10) "1393592520"
string(10) "1393592580"
string(10) "1393592640"