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