php csv导入数据库的例子

<?php
$db_name="wordpress";//如需更改数据库配置在此更改即可
$conn = mysql_connect("localhost", "root", "root");
mysql_select_db($db_name, $conn);
mysql_query("set names 'UTF-8'");

//解析csv文件，返回二维数组，第一维是一共有多少行csv数据，第二维是键名为csv列名，值为当前行当前列的csv数据值
function input_csv($csv_file) {
    $result_arr = array ();
    $i = 0;
    while ($data_line = fgetcsv($csv_file, 10000)) {
        if($i == 0){
            $GLOBALS['csv_key_name_arr'] = $data_line;
            $i++;
            continue;
        }

        foreach($GLOBALS['csv_key_name_arr'] as $csv_key_num=>$csv_key_name){
            $result_arr[$i][$csv_key_name] = $data_line[$csv_key_num];
        }
        $i++;
    }
    return $result_arr;
}
?>
<script type="text/javascript" src="jquery-1.8.2.js"></script>

<form action="doDaoRu2.php" method="post" enctype="multipart/form-data">
    <input type="file" name="csv_file" size="50" maxlength="100000" /><br/>
    <input type="submit" value="submit"/>
</form>

<?php
include_once("duDaoRuConfig.php");

$dir = "./upload/";
if (is_dir($dir) == false) {
    mkdir($dir, 0777);//在页面目录下要新建upload文件夹用来保存上传csv文件
}

//1，存储csv文件
$csv_filename = $_FILES["csv_file"]["name"];
move_uploaded_file($_FILES["csv_file"]["tmp_name"], "./upload/" . $_FILES["csv_file"]["name"]);

//2，获取所有表名
$selAllTableName_str = "SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = '$db_name'";
$allTableName_que = mysql_query($selAllTableName_str);

//3，获取csv文件数据的所有列名
$csv_key_name_arr = array();

//4，以csv列名为键名获取csv所有数据
$csv_file = fopen('upload/'.$csv_filename, 'r');
$result_arr = input_csv($csv_file);

fclose($csv_file);
?>
<form action="doDaoRu3.php" method="post">
    列名:
    <select class="table_name_sel" name="table_name_sel">
        <option> </option>
        <?php
        while($tableName_row = mysql_fetch_array($allTableName_que)){//可选择所有表名
        ?>
        <option><?php echo $tableName_row['table_name']?></option>
        <?php
        }
        ?>
    </select>
    <br/>
    <br/>
    <br/>
    <?php
    foreach($csv_key_name_arr as $csv_key_name)//罗列csv所有列名，并选择要导入到的对应表名，或不导入该csv列
    {
    ?>
    <span>
        <input type="hidden" name="<?php echo $csv_key_name;?>" class="csv_key_name_hid" value=""/><?php echo $csv_key_name;?>
        <select class='table_column_name_sel'>
            <option> </option>
        </select>
    </span>
    <?php
    }
    ?>
    <input type="hidden" name="csv_filename_hid" value="<?php echo $csv_filename;?>"/>
    <input type="submit" value="submit"/>
</form>
<script type="text/javascript">
$(".table_column_name_sel").change(function(){//当为csv列名选择对应表列名时，为该csv隐藏域值赋选择的表列名
    $(this).parent().find("input").val($(this).val());
})

$(".table_name_sel").change(function(){
    $(".csv_key_name_hid").val("");
    var tableName = $(this).val();
    var ajaxAddUrl = "doDaoRuAjax.php";
    //window.location = ajaxAddUrl+"?tableName="+tableName;
    $.post(ajaxAddUrl,{'tableName':tableName},function(jieShou){
        $(".table_column_name_sel option").remove();
        $(".table_column_name_sel").append("<option> </option>");
        $.each(jieShou,function(i,n){
            $(".table_column_name_sel").append("<option>"+n+"</option>");
        })
    },"json");
});
</script>

<?php
include_once("duDaoRuConfig.php");

$csv_filename = $_POST['csv_filename_hid'];
$tableName = $_POST['table_name_sel'];

//保存需要保存的csv数据的列与表列的关联
$table_real_column_name_arr = array();
//3，保存csv文件数据的所有列名
$csv_key_name_arr = array();

//获取csv所有列名及解析数据
$csv_file = fopen('upload/'.$csv_filename, 'r');
$result_arr = input_csv($csv_file);

//csv数据条数（已扣除第一行列名）
$result_arr_len = count($result_arr);

//将需要保存的csv列与表的列关联起来
foreach($csv_key_name_arr as $csv_key_name){
    if($_POST[$csv_key_name]){//判断前页该csv列已赋表列名
        $table_real_column_name_arr[$csv_key_name] = $_POST[$csv_key_name];
    }
}

//使用批插入，拼凑所有需插入的数据到一个长字符串的sql语句中
$all_insert_data_value_str = "";
for ($i = 1; $i <= $result_arr_len; $i++) { //循环获取各字段值
    $csv_line_data_value = "";
    $j = 1;
    foreach($table_real_column_name_arr as $csv_real_key_name=>$table_real_column_name){
        if($j == count($table_real_column_name_arr)){
            $csv_line_data_value .= " ' ".$result_arr[$i][$csv_real_key_name]."' ";
        }else{
            $csv_line_data_value .= " '".$result_arr[$i][$csv_real_key_name]."', ";
        }
        $j++;
    }
    $all_insert_data_value_str .= " ($csv_line_data_value) ,";
}
$all_insert_data_value_str = substr($all_insert_data_value_str,0,-1); //去掉最后一个逗号

//拼凑所有需插入值的字段名到一个长字符串的sql语句中
$all_insert_column_name_str = "";
$i = 1;
foreach($table_real_column_name_arr as $csv_real_key_name=>$table_real_column_name){
    if($i == count($table_real_column_name_arr)){
        $all_insert_column_name_str .= " $table_real_column_name ";
    }else{
        $all_insert_column_name_str .= " $table_real_column_name , ";
    }
    $i++;
}

//问题，1文本中如有回车换行会导致字符串中有转义字符导入失败，2中文乱码
//执行批插入，csv导入完成
$query = mysql_query("insert into $tableName ($all_insert_column_name_str) values $all_insert_data_value_str");//批量插入数据表中
fclose($csv_file);

if($query){
    echo '导入成功！';
}else{
    echo '导入失败！';
}
?>

<?php
include_once("duDaoRuConfig.php");

$talbeName = $_POST['tableName'];
//查询该表所有列
$selAllColumns_str = "SHOW COLUMNS FROM $talbeName";
$allColumnsName_que = mysql_query($selAllColumns_str);
$allColumnsName_arr = array();
$i = 0;
while($allColumnsName_row = mysql_fetch_array($allColumnsName_que)){
    $allColumnsName_arr[$i] = $allColumnsName_row['Field'];
    $i++;
}
ob_end_clean();
echo json_encode($allColumnsName_arr);
?>