这篇文章主要介绍了php使用fputcsv()函数csv文件读写数据的方法,分析了fputcsv()函数针对csv文件的读写操作技巧,具有一定参考借鉴价值,需要的朋友可以参考下

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:

1. $test_array = array(
2. array("111","sdfsd","sdds","43344","rrrr"),
3. array("sssssssss","gdfgfd","232323","wwewe","dsfds"),
4. array("fgfg","e4343","dsfds","w2332","xcvxc"),
5. array("11212","2323","344343","344343","rerreer"),
6. array("fds","43344444","33333333","ttttttt","gggggggggggg"),
7. array("kdfs","dsfdsfds","wewewe","sdsdddddddd","wwwwwwwwwww")
8. );
9. $file = fopen("test.csv","w") or die("Can't Open test.csv");
10. foreach($test_array as $line_array)
11. {
12. $isSuccess = fputcsv($file,$line_array);
13. print $isSuccess."<br>";
14. 　if($isSuccess===false)
15. {
16. die("Can't write csv line".$line_array);
17. }
18. }
19. fclose($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,代码如下:

1. $test_array = array(
2. array("111","sdfsd","sdds","43344","rrrr"),
3. array("sssssssss","gdfgfd","232323","wwewe","dsfds"),
4. array("fgfg","e4343","dsfds","w2332","xcvxc"),
5. array("11212","2323","344343","344343","rerreer"),
6. array("fds","43344444","33333333","ttttttt","gggggggggggg"),
7. array("kdfs","dsfdsfds","wewewe","sdsdddddddd","wwwwwwwwwww")
8. );
9. ob_start();
10. $file = fopen("php://output","w") or die("Can't Open php://output");
11. foreach($test_array as $line_array)
12. {
13. $isSuccess = fputcsv($file,$line_array);
14. if($isSuccess===false)
15. {
16. die("Can't write csv line".$line_array);
17. }
18. }
19. fclose($file) or die("Can't close file test.csv.");
20. $result = ob_get_contents();
21. 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:

1. $file = fopen('test.csv','r') or die("Can't open file test.csv");
2. $color="#ff0000";
3. print '<table ;
4. while($csv_line=fgetcsv($file))
5. {
6. print "<tr>";
7. $len = count($csv_line);
8. for($i=0;$i<$len;$i++)
9. {
10. if($i%2==0)$color="#cccccc";
11. else $color="#999999";
12. print '<td bgcolor='.$color.'>'.htmlentities($csv_line[$i]).'</td>';
13. }
14. print "</tr>";
15. }
16. print '</table>';
17. fclose($file) or die("Can't close file test.csv!");