PHP经验集锦

4、文件格式类

$mime_types = array(
''gif'' => ''image/gif'',
''jpg'' => ''image/jpeg'',
''jpeg'' => ''image/jpeg'',
''jpe'' => ''image/jpeg'',
''bmp'' => ''image/bmp'',
''png'' => ''image/png'',
''tif'' => ''image/tiff'',
''tiff'' => ''image/tiff'',
''pict'' => ''image/x-pict'',
''pic'' => ''image/x-pict'',
''pct'' => ''image/x-pict'',
''tif'' => ''image/tiff'',
''tiff'' => ''image/tiff'',
''psd'' => ''image/x-photoshop'',

''swf'' => ''application/x-shockwave-flash'',
''js'' => ''application/x-javascript'',
''pdf'' => ''application/pdf'',
''ps'' => ''application/postscript'',
''eps'' => ''application/postscript'',
''ai'' => ''application/postscript'',
''wmf'' => ''application/x-msmetafile'',

''css'' => ''text/css'',
''htm'' => ''text/html'',
''html'' => ''text/html'',
''txt'' => ''text/plain'',
''xml'' => ''text/xml'',
''wml'' => ''text/wml'',
''wbmp'' => ''image/vnd.wap.wbmp'',

''mid'' => ''audio/midi'',
''wav'' => ''audio/wav'',
''mp3'' => ''audio/mpeg'',
''mp2'' => ''audio/mpeg'',

''avi'' => ''video/x-msvideo'',
''mpeg'' => ''video/mpeg'',
''mpg'' => ''video/mpeg'',
''qt'' => ''video/quicktime'',
''mov'' => ''video/quicktime'',

''lha'' => ''application/x-lha'',
''lzh'' => ''application/x-lha'',
''z'' => ''application/x-compress'',
''gtar'' => ''application/x-gtar'',
''gz'' => ''application/x-gzip'',
''gzip'' => ''application/x-gzip'',
''tgz'' => ''application/x-gzip'',
''tar'' => ''application/x-tar'',
''bz2'' => ''application/bzip2'',
''zip'' => ''application/zip'',
''arj'' => ''application/x-arj'',
''rar'' => ''application/x-rar-compressed'',

''hqx'' => ''application/mac-binhex40'',
''sit'' => ''application/x-stuffit'',
''bin'' => ''application/x-macbinary'',

''uu'' => ''text/x-uuencode'',
''uue'' => ''text/x-uuencode'',

''latex''=> ''application/x-latex'',
''ltx'' => ''application/x-latex'',
''tcl'' => ''application/x-tcl'',

''pgp'' => ''application/pgp'',
''asc'' => ''application/pgp'',
''exe'' => ''application/x-msdownload'',
''doc'' => ''application/msword'',
''rtf'' => ''application/rtf'',
''xls'' => ''application/vnd.ms-excel'',
''ppt'' => ''application/vnd.ms-powerpoint'',
''mdb'' => ''application/x-msaccess'',
''wri'' => ''application/x-mswrite'',
);

5、php生成excel文档

<?
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=test.xls");
echo "test1\t";
echo "test2\t\n";
echo "test1\t";
echo "test2\t\n";
echo "test1\t";
echo "test2\t\n";
echo "test1\t";
echo "test2\t\n";
echo "test1\t";
echo "test2\t\n";
echo "test1\t";
echo "test2\t\n";
?>
//改动相应文件头就可以输出.doc .xls等文件格式了

6、时间比较问题
举一个简单例子说明:比如一个论坛对当天发表的贴子用new图片标记一下。
方法一：
//$db->rows[$i][date]中为数据库中datetime字段值.
$today=time();
$theDay=date("Y-m-d H:i:s",$today-24*3600);

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