最基础的PHP分类查询程序,php分类查询程序
<span>最初级的PHP分类查询程序 </span><!DOCTYPE html <span>PUBLIC</span> "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> </head> <body> <div align="center"><form action="<?php <span>$_SERVER</span>['PHP_SELF'];?>" method="post"><input type="submit" name="sell" value="智慧销售" /> &<span>nbsp; </span><input type="submit" name="manager" value="经营管理"/> <input type="submit" name="serve" value="智慧客服" /> <input type="submit" name="newemployee" value="智慧新员工" /> <<span>input type</span>="submit" name="development" value="个人发展" /></form> <?<span>php </span><span>if</span>(!<span>empty</span>(<span>$_POST</span>['sell'<span>])){ </span><span>$conn</span>=<span>mysql_connect</span>("localhost","root","root"<span>); </span><span>if</span>(!<span>$conn</span><span>){ </span><span>die</span>('Could not connect the database!'<span>); } </span><span>mysql_query</span>("SET NAMES UTF8"<span>); </span><span>mysql_query</span>("set character_set_client=utf8"<span>); </span><span>mysql_query</span>("set character_set_results=utf8"<span>); </span><span>mysql_select_db</span>("test",<span>$conn</span><span>); </span><span>$sql</span>="select * from ts1 where name like '%智慧销售%' "<span>; </span><span>$result</span>=<span>mysql_query</span>(<span>$sql</span><span>); </span><span>echo</span> '<table height="60%" width="60%" border="1" align="center">'<span>; </span><span>while</span>(<span>$row</span>=<span>mysql_fetch_assoc</span>(<span>$result</span><span>)){ </span><span>echo</span> '<tr height="45px">'<span>; </span><span>echo</span> '<td>'.<span>$row</span>['id'].'</td>'.'<td>'.<span>$row</span>['name'].'</td>'.'<td>'.<span>$row</span>['image'].'</td>'<span>; </span><span>echo</span> '</tr>'<span>; } </span><span>echo</span> '</table>'<span>; </span><span>mysql_close</span>(<span>$conn</span><span>); } / / http://www.pprar.com </span>?> <?<span>php </span><span>if</span>(!<span>empty</span>(<span>$_POST</span>['serve'<span>])){ </span><span>$conn</span>=<span>mysql_connect</span>("localhost","root","root"<span>); </span><span>if</span>(!<span>$conn</span><span>){ </span><span>die</span>('Could not connect the database!'<span>); } </span><span>mysql_query</span>("SET NAMES UTF8"<span>); </span><span>mysql_query</span>("set character_set_client=utf8"<span>); </span><span>mysql_query</span>("set character_set_results=utf8"<span>); </span><span>mysql_select_db</span>("test",<span>$conn</span><span>); </span><span>$sql</span>="select * from ts1 where name like '%智慧客服%' "<span>; </span><span>$result</span>=<span>mysql_query</span>(<span>$sql</span><span>); </span><span>echo</span> '<table height="60%" width="60%" border="1" align="center">'<span>; </span><span>while</span>(<span>$row</span>=<span>mysql_fetch_assoc</span>(<span>$result</span><span>)){ </span><span>echo</span> '<tr height="45px">'<span>; </span><span>echo</span> '<td>'.<span>$row</span>['id'].'</td>'.'<td>'.<span>$row</span>['name'].'</td>'.'<td>'.<span>$row</span>['image'].'</td>'<span>; </span><span>echo</span> '</tr>'<span>; } </span><span>echo</span> '</table>'<span>; </span><span>mysql_close</span>(<span>$conn</span><span>); } </span>?> <?<span>php </span><span>if</span>(!<span>empty</span>(<span>$_POST</span>['manager'<span>])){ </span><span>$conn</span>=<span>mysql_connect</span>("localhost","root","root"<span>); </span><span>if</span>(!<span>$conn</span><span>){ </span><span>die</span>('Could not connect the database!'<span>); } </span><span>mysql_query</span>("SET NAMES UTF8"<span>); </span><span>mysql_query</span>("set character_set_client=utf8"<span>); </span><span>mysql_query</span>("set character_set_results=utf8"<span>); </span><span>mysql_select_db</span>("test",<span>$conn</span><span>); </span><span>$sql</span>="select * from ts1 where name like '%经营管理%' "<span>; </span><span>$result</span>=<span>mysql_query</span>(<span>$sql</span><span>); </span><span>echo</span> '<table height="60%" width="60%" border="1" align="center">'<span>; </span><span>while</span>(<span>$row</span>=<span>mysql_fetch_assoc</span>(<span>$result</span><span>)){ </span><span>echo</span> '<tr height="45px">'<span>; </span><span>echo</span> '<td>'.<span>$row</span>['id'].'</td>'.'<td>'.<span>$row</span>['name'].'</td>'.'<td>'.<span>$row</span>['image'].'</td>'<span>; </span><span>echo</span> '</tr>'<span>; } </span><span>echo</span> '</table>'<span>; </span><span>mysql_close</span>(<span>$conn</span><span>); } </span>?> <?<span>php </span><span>if</span>(!<span>empty</span>(<span>$_POST</span>['newemployee'<span>])){ </span><span>$conn</span>=<span>mysql_connect</span>("localhost","root","root"<span>); </span><span>if</span>(!<span>$conn</span><span>){ </span><span>die</span>('Could not connect the database!'<span>); } </span><span>mysql_query</span>("SET NAMES UTF8"<span>); </span><span>mysql_query</span>("set character_set_client=utf8"<span>); </span><span>mysql_query</span>("set character_set_results=utf8"<span>); </span><span>mysql_select_db</span>("test",<span>$conn</span><span>); </span><span>$sql</span>="select * from ts1 where name like '%智慧新员工%'"<span>; </span><span>$result</span>=<span>mysql_query</span>(<span>$sql</span><span>); </span><span>echo</span> '<table height="60%" width="60%" border="1" align="center">'<span>; </span><span>while</span>(<span>$row</span>=<span>mysql_fetch_assoc</span>(<span>$result</span><span>)){ </span><span>echo</span> '<tr height="45px">'<span>; </span><span>echo</span> '<td>'.<span>$row</span>['id'].'</td>'.'<td>'.<span>$row</span>['name'].'</td>'.'<td>'.<span>$row</span>['image'].'</td>'<span>; </span><span>echo</span> '</tr>'<span>; } </span><span>echo</span> '</table>'<span>; </span><span>mysql_close</span>(<span>$conn</span><span>); } </span>?> <?<span>php </span><span>if</span>(!<span>empty</span>(<span>$_POST</span>['development'<span>])){ </span><span>$conn</span>=<span>mysql_connect</span>("localhost","root","root"<span>); </span><span>if</span>(!<span>$conn</span><span>){ </span><span>die</span>('Could not connect the database!'<span>); } </span><span>mysql_query</span>("SET NAMES UTF8"<span>); </span><span>mysql_query</span>("set character_set_client=utf8"<span>); </span><span>mysql_query</span>("set character_set_results=utf8"<span>); </span><span>mysql_select_db</span>("test",<span>$conn</span><span>); </span><span>$sql</span>="select * from ts1 where name like '%个人发展%' "<span>; </span><span>$result</span>=<span>mysql_query</span>(<span>$sql</span><span>); </span><span>echo</span> '<table height="60%" width="60%" border="1" align="center">'<span>; </span><span>while</span>(<span>$row</span>=<span>mysql_fetch_assoc</span>(<span>$result</span><span>)){ </span><span>echo</span> '<tr height="45px">'<span>; </span><span>echo</span> '<td>'.<span>$row</span>['id'].'</td>'.'<td>'.<span>$row</span>['name'].'</td>'.'<td>'.<span>$row</span>['image'].'</td>'<span>; </span><span>echo</span> '</tr>'<span>; } </span><span>echo</span> '</table>'<span>; </span><span>mysql_close</span>(<span>$conn</span><span>); } </span>?> </div> </body> </html>
先学PHP基础,再去百度查自己需要的功能的原理,然后去实验,实验成功后在网站上使用它。
走完这四步,你才算学会了这门技术的一个功能。
学不会PHP人绝大部分一直在重复第一步 !
w3school上的教程非常的基础,很容易懂,建议先看完它。然后可以看看php100的视频教程,这个讲得很细很易懂,而且讲知识点非常的多,我也是看这个学会的。
还是那句话,看教程只是在背乘法口诀,只会乘法口诀的学生从来都不会做应用题,只有使用它,那才是真正的学习!
最简单的程序就这样:
echo 'Hello, world!';
?>
下载PHP可以在www.php.net下载,选择windows下的二进制代码,可以下载安装包和ZIP包,我喜欢ZIP包,随便解压缩到一个文件夹就可以了,例如c:\php\下。双击上面保存的(我用记事本编辑)PHP文件,选择和你刚才解开的c:\php\php.exe关联就可以了。

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。


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