PHP±à³ÌµÄÏȽø¼¼Êõ
ËäÈ»PHPÌṩÁ˺ܶ๦ÄÜÎÒÃÇ£¬µ«ÓÐЩÊÂÇ黹ûÓд¦ÀíÕâЩ·Ç³£·½±ã¡£ÀýÈ磬PHPÌṩµÄÈÕÆÚ¹¦ÄÜ£¬Ê±¼äºÜÓÐÏÞ¡£ MySQLÒѾÌṩÁËÐí¶àÎÒÃÇÕâЩ¹¦ÄÜ¡£ÎÒ¿ÉÒÔʹÓÃMySQLº¯ÊýÀ´´¦ÀíPHPµÄ¹ý³Ì£¿ÎÒÔÚÏÂÃæµÄ³¢ÊÔ¡£
“£¿ PHPµÄ
$ data_time =“1998-12-31 23:59:59”;
$ connect_id = mysql_connect£¨'±¾µØÖ÷»ú'£©;
$ query_id = mysql_query£¨“Ñ¡ÔñDATE_ADD£¨'$ data_time'£¬¼ä¸ô1Ä꣩”£¬$ connect_id£©;
$ data_time = mysql_result£¨$ query_id£¬0£©;
mysql_close£¨$ connect_id£©;
»ØÉù$ data_time;
£¿ “
Õþ¸®Ó¦¼³È¡¾Ñ飬ÎÒÃÇÔÚ±à³Ì¹ý³ÌÖÐÒ²¿ÉÒÔʹÓÃmysqlÌṩµÄÆäËûÖ°ÄÜ¡£
µ±È»£¬¹¦ÄܺÍʹÓÃÌṩÁËMySQLµÄBaituoÄãÓ¦¸ÃÈ¥µÄÊֲᡣ
²»Êʵ±µÄ£¬ÇëÖ¸Õý£¡
Ïà¹ØÎĵµ£º
php°²×°³ÌÐòÔÀí£º
ÆäʵPHP³ÌÐòµÄ°²×°ÔÀíÎ޷ǾÍÊǽ«Êý¾Ý¿â½á¹¹ºÍÄÚÈݵ¼Èëµ½ÏàÓ¦µÄÊý¾Ý¿âÖУ¬´ÓÕâ¸ö¹ý³ÌÖÐÖØÐÂÅäÖÃÁ¬½ÓÊý¾Ý¿âµÄ²ÎÊýºÍÎļþ£¬ÎªÁ˱£Ö¤²»±»±ðÈ˶ñÒâʹÓð²×°Îļþ£¬µ±°²×°Íê³ÉºóÐèÒªÐ޸ݲװÎļþ¡£
²½Ö裺
¼ì²éĿ¼»òÎļþµÄȨÏÞ
Ð޸ĻòÌî¼ÓÅäÖÃÎļþ
¼ì²éÅäÖÃÎļþÕýÈ·ÐÔ
µ¼ÈëÊý¾Ý¿â
Ëø¶¨»òÉ ......
$ip = "1.1.1.255".chr(0)."haha";
if(ereg("^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$",$ip)) {
echo $ip;
} else {
echo "unknown";
}
Õâ¸öeregÕýÔòÏÞÖÆÁË$ipµÄÊý¾ÝΪxxx.xxx.xxx.xxxÕâÑùµÄÐÎʽ£¬±íÃæÉÏ¿´ÉÏÃæµÄ´úÂëÓ¦¸ÃÊä³ö"unknown"£¬¶øÊµ¼ÊÈ´Êä³öÁË"1.1.1.255haha"£¬ÒòΪeregº¯Êý´æÔÚNULL½Ø¶Ï ......
<?php
// Á¬½Ó£¬Ñ¡ÔñÊý¾Ý¿â
$dbconn = pg_connect("host=localhost dbname=publishing user=www password=foo")
or die('Could not connect: ' . pg_last_error());
// Ö´ÐÐ SQL ²éѯ
$query = 'SELECT * from authors';
$result = pg_query($query) or die('Query failed: ' . pg_last_error( ......
1. DEDE £ÕâÊÇÒ»¿î¹úÄÚ¿ªÔ´µÄcms£¬×÷ÕßÊÇÒ»¸ö¸öÈË£¬ÄÜ×ö³öÈç´Ë¹¦ÄܵÄcms£¬ÊÇÏ൱²»´íµÄ¡£2007°æ¹¦ÄÜÊ®·ÖÇ¿´ó£¬Ï£ÍûÄܸÄÉÆÖ®Ç°Êý¾ÝÁ¿Ò»´ó£¬¸üо²Ì¬Ò³¾ÍºÜÂýµÄȱµã¡£ÒòΪ¿ªÔ´£¬Óн϶àµÄÍæ¼ÒºÍÓµ»¤Õß¡£·Ç³£ÊʺÏÓÐÒ»¶¨±à³Ì»ù´¡µÄÕ¾³¤¡£
¹Ù·½£ºhttp://www.dedecms.com
2. phpcms£Ò»¸ö×ۺϵÄÍøÕ¾¹ÜÀíϵͳ£¬ ......
1 echo();2 print();3 die();4 printf();5 sprintf();6 print_r();7 var_dump();
1 echo()
¿ÉÒÔͬʱÊä³ö¶à¸ö×Ö·û´®,¿ÉÒÔ¶à¸ö²ÎÊý,²¢²»ÐèÒªÔ²À¨ºÅ,ÎÞ·µ»ØÖµ¡£
2 print()
Ö»¿ÉÒÔͬʱÊä³öÒ»¸ö×Ö·û´®£¬Ò»¸ö²ÎÊý,ÐèÒªÔ²À¨ºÅ,Óзµ»ØÖµ,µ±ÆäÖ´ÐÐʧ°Üʱ·µflase .print µÄÓ÷¨ºÍCÓï ......