php ¶ÁÈ¡ÎļþÍ·²¿Á½¸ö×Ö½Ú ÅжÏÎļþµÄʵ¼ÊÀàÐÍ
function checkFileType($fileName){
$file = fopen($fileName, "rb");
$bin = fread($file, 2); //Ö»¶Á2×Ö½Ú
fclose($file);
$strInfo = @unpack("C2chars", $bin);// CΪÎÞ·ûºÅÕûÊý£¬ÍøÉÏËѵ½µÄ¶¼ÊÇc£¬ÎªÓзûºÅÕûÊý£¬ÕâÑù»á²úÉú¸ºÊýÅжϲ»Õý³£
$typeCode = intval($strInfo['chars1'].$strInfo['chars2']);
$fileType = '';
if($typeCode == 255216 /*jpg*/ || $typeCode == 7173 /*gif*/ || $typeCode == 13780 /*png*/) {
return true;
}else{
return false;
}
}
Ïà¹ØÎĵµ£º
ÕâÊÇһЩʹÓÃÆµÂʱȽϸߵĺ¯Êý£¬ÓеÄÀ´×Ô±ðÈ˵ijÌÐò......
1.²úÉúËæ»ú×Ö·û´®º¯Êý
function random($length) {
$hash = '';
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
$max = strlen($chars) - 1;
mt_srand((double)microtime() * 1000000);
for($ ......
×ªÔØ£ºhttp://www.phpjs.cn/article_90.html
php³£ÓÃÀàÕûÀí
ʱ¼ä£º2009-12-19 20:45 À´Ô´£ºÈËÁ¦·½ ×÷Õߣºsyuanq µã»÷£º236
ÔÚʵ¼Ê¿ª·¢¹ý³Ì»á¾³£»áÓöµ½Ò»Ð©Öظ´µÄ²Ù×÷£¬Èç¹ûÿ´Î¶¼Òª×Ô¼ºÈ¥ÊµÏÖÕâÎÞÒɼÓÖØÁË×Ô¼ºµÄ¹¤×÷Á¿£¬ÏÂÃæ¶ÔһЩ¿ÉÄܾ³£Óõ½µÄÀà×ö¸öÕûÀí£º
ͼ±í¿â
ÏÂÃæµÄÀà¿â¿ÉÒÔÈÃÄãºÜ¼òµ¥¾ÍÄÜ´´½ ......
<?php
function genPassword($min = 5, $max = 8)
{
$validchars="abcdefghijklmnopqrstuvwxyz123456789";
$max_char=strlen($validchars)-1;
$length=mt_rand($min,$max);
$password = "";
for($i=0;$i<$length;$i++)
{
$password.=$validchars[mt_rand(0,$max_char)] ......
1.°Ñ½âѹµÄphp-5.2.6-Win32.zipÖØÃüÃûΪphp5¡£²¢¸´ÖƵ½DÅÌĿ¼Ï¡£¼´°²×°Â·¾¶Îª D:\php5
2.ÕÒµ½phpĿ¼Ï嵀 php.ini-dist»ò php.ini.recommendedÎļþ£¬ÖØÃüÃûΪ php.ini
3.ÔÙ°ÑphpĿ¼ÏµÄphp5ts.dll,libmysql.dll¸´ÖƵ½Ä¿Â¼ c:\windows\system32Ï¡£
4.°Ñphp5\extĿ¼ÏµÄphp_gd2.dll,php_mysql.dll,php_mbstring.dllÎ ......