php fputcsv() 函數csv數據讀寫數據庫文件代碼

php教程 fputcsv() 函數csv數據讀寫數據庫教程文件代碼

fputcsv() 函數用於將數據格式為csv格式，以便寫入文件或者數據庫。

1.將字符串寫入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."<br>";

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

fputcsv()函數返回所寫入行的字符的個數或者false，當寫入失敗時返回false。

2.將格式化的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)函數讀取csv文件。

fgetcsv的參數說明如下：

file：需要讀取的csv文件，此參數是必需的。

length：表示大於csv文件中最長的行的長度的值。php5之前是必需參數。在php5中是可選參數，如果不設置此參數或者將其設為0，php將會讀取

一整行的數據。如果行的長度超過8192個字節時，應該將length值設定一個數，而不是讓php自動去計算行的長度。

separator：指定數據的分隔符，默認是逗號，如果指定為“；”，那麼fgetcsv函數將按照“；”來解析行數據。

fgetcsv的返回值：

根據file的一行數據，返回一個數組。如果讀取文件出錯，則返回false。到達文件尾部時，也返回false。

下面是一個讀取test.csv文件的例子。

$file = fopen('test.csv','r') or die("Can't open file test.csv");
    $color="#ff0000";
    print '<table border=0>';
    while($csv_line=fgetcsv($file))
    {
        print "<tr>";
        $len = count($csv_line);
        for($i=0;$i<$len;$i++)
        {
            if($i%2==0)$color="#cccccc";
            else $color="#999999";
            print '<td bgcolor='.$color.'>'.htmlentities($csv_line[$i]).'</td>';
        }
        print "</tr>";
    }
    print '</table>';
    fclose($file) or die("Can't close file test.csv!");