php使用fputcsv()函数csv文件读写数据的方法

2020-03-22 20:32:30

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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:
复制代码代码如下:$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.");
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:
复制代码代码如下:$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.");
$result = ob_get_contents();
ob_end_clean();
以用fgetcsv(file,length,separator,enclosure)函数读取csv文件.fgetcsv的参数说明如下:file：需要读取的csv文件，此参数是必需的。length：表示大于csv文件中最长的行的长度的值。php5之前是必需参数。在php5中是可选参数，如果不设置此参数或者将其设为0，php将会读取.一整行的数据。如果行的长度超过8192个字节时，应该将length值设定一个数，而不是让php自动去计算行的长度。separator：指定数据的分隔符，默认是逗号，如果指定为“；”，那么fgetcsv函数将按照“；”来解析行数据。fgetcsv的返回值:根据file的一行数据,返回一个数组,如果读取文件出错,则返回false,到达文件尾部时,也返回false.下面是一个读取test.csv文件的例子:
复制代码代码如下:$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。PHP教程

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