php使用fputcsv()函数csv文件读写数据的方法

本文实例讲述了php使用fputcsv()函数csv文件读写数据的方法。分享给大家供大家参考。具体分

本文实例讲述了php使用fputcsv()函数csv文件读写数据的方法。分享给大家供大家参考。具体分析如下：

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,代码如下:

$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.");

2.将格式化的csv字符串保存到字符串中,代码如下:

$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();

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"); 
$color="#ff0000"; 
print '<table border=0>'; 
while($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!");

希望本文所述对大家的php程序设计有所帮助。