¹ØÓÚMySQLµÄ²éѯ½á¹û
´úÂëÈçÏ£º
$sql = "select count(*) from admin";
$result = mysql_query($sql);
$num=mysql_num_rows($result);
echo $num;
Ϊʲô²»¹ÜÎҵļǼÓжàÉÙÌõ£¬¶¼ÊÇÊä³ö1£¬
ÎÒÏëÊä³ö²éѯµÄ½á¹û£¬Ó¦¸ÃÔõôÐ޸ģ¿
ÈçÐèÒªÔĶÁ¸Ã»Ø¸´£¬ÇëµÇ¼»ò×¢²áCSDN!
Ïà¹ØÎÊ´ð£º
ÊÇÒ»Ìõ¸üвÙ×÷£º
Java code:
¡¡
private Integer bonus = 0;
public Integer getBonus() {
return bonus;
}
public void setBonus(Integer bonus) {
this.bonus = bonus;
}
String SQL = ......
ÔÚphpÖÐÓÃÕâ¾ä¾Í¿ÉʵÏÖ¶Ô¿Í»§¶Ë×Ö·û¼¯µÄÉèÖÃ....
mysql_query("set names gb2312")
ÇëÎÊÔÚjspÖÐÈçºÎʵÏÖÕâ¾ä¹¦ÄÜ£¿£¿£¿
jspÖУº
<%@page language="java" contentType=&q ......
ÎÒµÄMySQL±àÂ룬ÎÒÔÚmy.iniÖÐÉèÖõÄΪutf8,ÔÚ´´½¨Êý¾Ý¿âʱѡÔñµÄ±àÂëΪutf8_Unicode_ci£¬ÎÒÔÚ¡¢´ÓÒ³Ãæ²åÈëÊý¾Ý¿â£¬ÔÚÒ³ÃæÉÏÏÔʾÕý³££¬µ«´ÓphpmyadminÖУ¬²é¿´Ê±£¬ÏÔʾΪÂÒÂ루ÎÒÎÒ¡£& ......
Á¬½ÓÊý¾Ý¿âʱÔõô³öÏÖÕâÑùµÄ´íÎó£º[localhost] ERROR 1045: Access denied for user 'root'@'localhost' (using password: YES)
ÔΣ¬Óï¾äÌùÀ´¿´¿´
ÄãÃÜÂëÄØ
ÃÜÂë´íÁ˰ɡ£
¸Õѧmysql,ÕÕ×ÅÊ ......
ÎÒ½¨ÁËÁ½¸ö±í£¬Ò»¸ö±íÃ÷user£¬Ò»¸ö±íanswer
±íuserµÄ½á¹¹{id,username,password}
±íanswerµÄ½á¹¹{A_id,question,answer,U_id}
Çë½Ì´ó¼ÒÎÒÔõôÉèÖòÅÄÜÔÚ±íuser²åÈëÊý¾Ýʱ£¬±íanswer¶ÔÓ¦µÄU_id×Ô¶¯¸üжÔÓ¦± ......