php - 解析 PHP 问题 - fopen() 对于 CSV 文件无法正常工作

Question

当可通过 URL 访问 CSV 文件时，我可以解析 CSV 文件并创建 100% 正确的插入语句。问题是，当我在以 ..format=csv 结尾的 URL 上使用 fopen 时，代码不起作用。

代码中是否缺少任何内容才能使其正常工作？

<?php

$servername = "localhost";  
$username = "root";
$password = "xxxx";
$dbname = "player";

 // Create connection
 $conn = new mysqli($servername, $username, $password, $dbname);


 $f_pointer=fopen("URL-format=csv","r"); 


 $sql = "TRUNCATE TABLE scores";
 $conn->query($sql);


while(! feof($f_pointer)){
   $ar=fgetcsv($f_pointer);
$sql="INSERT INTO     scores(pos,errorthing,name,total)values('$ar[0]','$ar[1]','$ar[2]','$ar[3]','$ar[4]')";
$conn->query($sql); 
  echo $sql;
 echo "<br>";
    }
 ?>

这是错误消息:

>root@MorryServer:/# php testing.php
    PHP Notice:  Undefined offset: 1 in /testing.php on line 21
    PHP Notice:  Undefined offset: 2 in /testing.php on line 21
    PHP Notice:  Undefined offset: 3 in /testing.php on line 21
    PHP Notice:  Undefined offset: 4 in /testing.php on line 21
    INSERT INTO scores(pos,errorthing,name,total)values(???   UtUehOE_ZUzUAfAakQ87dsLbM.csvu??O????_a?t.????s??-??P?蜗+?L?r???ן??? Mj???g<?ӛ????_7??Q?D?Y?R?e?c','','','','')<br>PHP Notice:  Undefined offset: 2 in   /testing.php on line 21
    PHP Notice:  Undefined offset: 3 in /testing.php on line 21
    PHP Notice:  Undefined offset: 4 in /testing.php on line 21
    INSERT INTO scores(pos,errorthing,name,total)values('   ??R?<???M??oCQ??0?  P????[?*?q??EF?iB????','?EJsM???','','','')<br>PHP Notice:  Undefined  offset: 2 in /testing.php on line 21
    PHP Notice:  Undefined offset: 3 in /testing.php on line 21
    PHP Notice:  Undefined offset: 4 in /testing.php on line 21
    4n c?%???o??'??q?wĠ!f1?)?d)ΐ???᡾???z0?*total)values('R:
                                       ??','?g?ٓ4tG9????fd???*???','','','')   <br>PHP Notice:  Undefined offset: 4 in /testing.php on line 21 
       INSERT INTO scores(pos,errorthing,name,total)values('m?``???)??VZg?\{???@?P?}???gY9y?p?TA=ˌ','????@^Q?I~FR??%g?? 
                                 *%;?M??.?&`??m?e cZy!????','4?xI??','#?????"}?.????u??d^????-e?dF?B','')<br>PHP Notice:  Undefined offset: 3 in /testing.php on line 21
       PHP Notice:  Undefined offset: 4 in /testing.php on line 21
       INSERT INTO scores(pos,errorthing,name,total)values('罡?m??7?&?ɣ
                                                                ?g)??L3??l??T2?e[?v?
]!?????xm??ѧB?7?ļ?J?????ۋ?bA?»O?Y?4e?O??O?
cl??;???9-bZ?bط??Rk*t?????Ƣ??V??9??죨?\?۴ B??ԅ?T?a?OR? 3??P??????2~?}?F?8??c??LK@?(????Ns%T1??i]=M???=?????+??)W#{Z?b?S)μ???W??','?3vK?qZ?D?7mE/T?
                                                                  ?ѡ????5?~SMl?bwɿ8J?ؾ>??1Q?/e?ifäs/U?D????'YI??m;NU?%ی?fx??٦?x#𩄝??Ù??_??_??O????e??{M???e?v?E??~?)????_??B??I??X?','','')<br>PHP Notice:  Undefined offset: 1 in /testing.php on line 21
      PHP Notice:  Undefined offset: 2 in /testing.php on line 21
      PHP Notice:  Undefined offset: 3 in /testing.php on line 21
      PHP Notice:  Undefined offset: 4 in /testing.php on line 21
      INSERT INTO scores(pos,errorthing,name,total)values('??w՛"???B???Ep??  DXҖ4:?Z?oU<?`???w??"?*?Ϛ???/??'7Ɂ?;q"?*?2?E?65??S4
                                       ^??"?<҃
                                             pl??}?g?Ksw?'xI?x?R??8[??%d???  0-kp??="D??r}J?־?g??','','','','')<br>PHP Notice:  Undefined offset: 2 in /testing.php on line 21
     PHP Notice:  Undefined offset: 3 in /testing.php on line 21
      PHP Notice:  Undefined offset: 4 in /testing.php on line 21
      INSERT INTO scores(pos,errorthing,name,total)values('v??Mrpqӳq????x??m??z?Z?ɮ??}R͘???3t?:\0YxOyLv8?ؠi?Mi??<?>?T?KN?<?j??.?ZB?','???c?R>???R??i????b?Ģ????Nb??b<V>鄪???(׽??$?ɓ(????L>??(????Ƿ'?."?t??q?f꼪?\????N?IH?ӡ?;?Y?iO4J??Xʤ9??Ă?5?RUb    \V.?;?????2??QN????????+??MX???F?k?*h?Olr?Q$?&^9H?v}K?F??8@G?y?T?Ԯ???W?1?{??<???ܷN?b^V8
       ?T?????\?nv4l?j??}???(?','','','')<br>PHP Notice:  Undefined offset:    2 in /testing.php on line 21
        PHP Notice:  Undefined offset: 3 in /testing.php on line 21  
        PHP Notice:  Undefined offset: 4 in /testing.php on line 21
         INSERT INTO scores(pos,errorthing,name,total)values('`??wp??g???????B?    u?SS??x?a^hKhv???51?JԸ8S???5zQ6?숵?`ntn?C*VMk?ؔ~|????Pw?)?IF?g?|MCt?gS????"V    ?KXf>?^?6?]???????xW?W???gێ!??d?QoH??]?!??ia??`ͨ?>?-?h?ki?K ƅ?? ?!ZQ???t???    O???`??3??u??P??c܁?R?g???E?B3????@;????~?????8Gc?;?$sI?z??"??R5??N?;вX[?^?    Aȃj??i??d','?[??0GUH?ٷ???c?*???Jl?V??a?j??lă?N:?&z?nL???m??=t??@W?O?:?    S??????mPY??v?a똺?????P?p?=?#???]???ow?????GPp','','','')<br>

Answer 1

在您的代码中，您没有获取 $ar[0]、$ar[1]、$ar[2] 等的值，因此，您会收到错误。

尝试一下，了解如何打开 .csv 文件，读取内容并插入到数据库的相应列中。

   $row = 1;
   if (($handle = fopen("xxxxxxxxx.csv", "r")) !== FALSE) {
   while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
    $num = count($data);
    echo "<p> $num fields in line $row: <br /></p>\n";   
    $row++;
    for ($c=0; $c < $num; $c++) {
        $blackpowder = $data;
        $dynamit = implode(";", $blackpowder);
        $pieces = explode(";", $dynamit);
        $col1 = $pieces[0];
        $col2 = $pieces[1];
        $col3 = $pieces[2];
        $col4 = $pieces[3];
        $col5 = $pieces[5];
        mysql_query("
            INSERT INTO `xxxxxx` 
                (`xxx`,`xxx`,`xxx`,`xxxx`,`xxx`) 
            VALUES 
                ('".$col1."','".$col2."','".$col3."','".$col4."','".$col5."')
        ");
    }
}
}