Question

我正在下载并将远程文本文件导入到本地mysql数据库。

格式最近已更改为在其中一列中包含逗号，导致导入失败，并显示错误“第1行的CSV输入中的字段数无效”。数据现在看起来像：

"bonita","FL","212025920","2012929","Hooker,Bill"

如何更新此代码段以允许引号内的逗号？

foreach(explode($lineseparator,$csvcontent) as $line) {

    $lines++;

    $line = trim($line," \t");

    $line = str_replace("\r","",$line);

    /************************************
    This line escapes the special character. remove it if entries are already escaped in the csv file
    ************************************/
    $line = str_replace("'","\'",$line);
    /*************************************/

    $linearray = explode($fieldseparator,$line);

    $linemysql = implode("','",$linearray);

    $linemysql = str_replace("\"","",$linemysql);###code added

        $query = "insert ignore into $databasetable values('$linemysql');";

Answer 1

带有LOAD DATA LOCAL INFILE选项的

FIELDS TERMINATED BY ',' ENCLOSED BY '"'应直接读取该文件。 LOAD DATA INFILE也比标准INSERT语句更快。

http://dev.mysql.com/doc/refman/5.1/en/load-data.html

这很接近，但我认为TRIM（）不会删除标签：

LOAD DATA LOCAL INFILE '/my/local/file/path.csv' IGNORE INTO TABLE mytable FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\r\n' (@a, @b, @c, @d, @e) SET col1=TRIM(@a), col2=TRIM(@b), col3=TRIM(@c), col4=TRIM(@d) col5=TRIM(@e)

Answer 2

将您的功能重写为：

     foreach(explode($lineseparator,$csvcontent) as $line) {

        $lines++;
        $line = trim($line," \t");
        $line = str_replace("\r","",$line);

        $lineArray = str_getcsv($line, ",", '"');
        $linemysql = implode("','",$lineArray);
         $query = "insert ignore into $databasetable values('$linemysql');";
        //.. Handle  the rest

     }

php getcsv函数负责分隔符并跟踪附件 - 为您节省这些麻烦。

以下代码段：

   $line = '"bonita","FL","212025920","2012929","Hooker,Bill"';
   $array = str_getcsv($line, ",", '"');
   print_r($array);

输出：

   Array ( [0] => bonita [1] => FL [2] => 212025920 [3] => 2012929 [4] => Hooker,Bill )

Answer 3

样本表：

CREATE TABLE `table1` (
    `id` VARCHAR(50) NULL DEFAULT NULL,
    `a1` VARCHAR(50) NULL DEFAULT NULL,
    `b1` VARCHAR(50) NULL DEFAULT NULL,
    `c1` VARCHAR(50) NULL DEFAULT NULL,
    `d1` VARCHAR(50) NULL DEFAULT NULL
)
COLLATE='utf8_general_ci'
ENGINE=InnoD1B;

导入查询

load data local infile 'd:/import.csv' into table table1 fields terminated by ','
enclosed by '"'
lines terminated by '\r\n'
(id, a1, b1, c1, d1)

<强> import.csv

"bonita1","FL1","212025920","2012929","Hooker,Bill"
"bonita2","FL2","212025920","2012929","Hooker,Bill"
"bonita3","FL3","212025920","2012929","Hooker,Bill"

将逗号分隔的文件导入mysql

3 个答案: