一聚教程网:一个值得你收藏的教程网站

热门教程

php fputcsv() 函数csv数据读写数据库文件代码

时间:2022-06-24 18:20:24 编辑:袖梨 来源:一聚教程网

php教程 fputcsv() 函数csv数据读写数据库教程文件代码

fputcsv() 函数用于将数据格式为csv格式,以便写入文件或者数据库。

1.将字符串写入csv文件中

 

    $test_array = array(
        array("111","sdfsd","sdds","43344","rrrr"),
        array("sssssssss","gdfgfd","232323","wwewe","dsfds"),
        array("fgfg","e4343","dsfds","w2332","xcvxc"),
        array("11212","2323","344343","344343","rerreer"),
        array("fds","43344444","33333333","ttttttt","gggggggggggg"),
        array("kdfs","dsfdsfds","wewewe","sdsdddddddd","wwwwwwwwwww")
    );
   
    $file = fopen("test.csv","w") or die("Can't Open test.csv");
    foreach($test_array as $line_array)
    {
        $isSuccess = fputcsv($file,$line_array);
        print $isSuccess."
";

     if($isSuccess===false)
        {
            die("Can't write csv line".$line_array);
        }
    }
    fclose($file) or die("Can't close file test.csv.");


fputcsv()函数返回所写入行的字符的个数或者false,当写入失败时返回false。

2.将格式化的csv字符串保存到字符串中。

 

$test_array = array(
        array("111","sdfsd","sdds","43344","rrrr"),
        array("sssssssss","gdfgfd","232323","wwewe","dsfds"),
        array("fgfg","e4343","dsfds","w2332","xcvxc"),
        array("11212","2323","344343","344343","rerreer"),
        array("fds","43344444","33333333","ttttttt","gggggggggggg"),
        array("kdfs","dsfdsfds","wewewe","sdsdddddddd","wwwwwwwwwww")
    );
    ob_start();
    $file = fopen("php://output","w") or die("Can't Open php://output");
    foreach($test_array as $line_array)
    {
        $isSuccess = fputcsv($file,$line_array);
        if($isSuccess===false)
        {
            die("Can't write csv line".$line_array);
        }
    }
   
    fclose($file) or die("Can't close file test.csv.");
    $result = ob_get_contents();
    ob_end_clean();


以用fgetcsv(file,length,separator,enclosure)函数读取csv文件。

fgetcsv的参数说明如下:

file:需要读取的csv文件,此参数是必需的。

length:表示大于csv文件中最长的行的长度的值。php5之前是必需参数。在php5中是可选参数,如果不设置此参数或者将其设为0,php将会读取

一整行的数据。如果行的长度超过8192个字节时,应该将length值设定一个数,而不是让php自动去计算行的长度。

separator:指定数据的分隔符,默认是逗号,如果指定为“;”,那么fgetcsv函数将按照“;”来解析行数据。

fgetcsv的返回值:

根据file的一行数据,返回一个数组。如果读取文件出错,则返回false。到达文件尾部时,也返回false。

下面是一个读取test.csv文件的例子。

$file = fopen('test.csv','r') or die("Can't open file test.csv");
    $color="#ff0000";
    print '

';
    while($csv_line=fgetcsv($file))
    {
        print "";
        $len = count($csv_line);
        for($i=0;$i<$len;$i++)
        {
            if($i%2==0)$color="#cccccc";
            else $color="#999999";
            print '';
        }
        print "";
    }
    print '
'.htmlentities($csv_line[$i]).'
';
    fclose($file) or die("Can't close file test.csv!");

热门栏目