总结
条件:if ()else的应用、三元运算符: ? : 条件? 真运行:假运行;
比较符 :>、<、>=、<=、==(值相等)、===(类型与值同时相等)、<>、==!;
联结符:.=、.;
自定义函数 function name(){}按命名可以分为有名字的函数 与没名字的函数,按传参数的个数可以单参与多参函数;
实例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title><?php echo '员工管理系统'; ?></title> <style type="text/css"> table,th,td{ border: 1px solid #666; padding: 8px; } table{ border-collapse: collapse; /*去掉边框*/ width: 80%; text-align: center; margin: 30px auto; } thead tr:first-of-type { background-color: lightblue; } tbody tr:hover{ background-color: #efefef; } } table>caption{ background-color: #ccc; font-size: 50px; margin-bottom: 1px; } table+ p{ text-align: center; } </style> </head> <body> <table> <caption><h2><?php echo '员工信息表'; ?></h2></caption> <thead> <tr> <th>编号</th> <th>姓名</th> <th>年龄</th> <th>性别</th> <th>邮箱</th> <th>密码</th> </tr> </thead> <tbody> <tr> <th>1</th> <th>猪哥</th> <th>30</th> <th>男</th> <th>zhug@php.cn</th> <th>123456</th> </tr> <tr> <td>2</td> <td>朱老师</td> <td>40</td> <td>男</td> <td>zls@php.cn</td> <td>123456</td> </tr> <tr> <td>3</td>> <td>西门大官人</td> <td>50</td> <td>男</td> <td>xmdgr@php.cn</td> <td>123456</td> </tr> <tr> <td>4</td> <td>灭绝师太</td> <td>60</td> <td>女</td> <td>mjst@php.cn</td> <td>123456</td> </tr> <tr> <td>5</td> <td>韦小宝</td> <td>20</td> <td>男</td> <td>wxb@php.cn</td> <td>123456</td> </tr> <?php $arr=array( array( 6, '欧阳克', 18, '男', 'ou@php.cn', '123456' ), array( 7, '王蓉', 15, '女', 'hr@php.cn', '123456' )); foreach($arr as $b){ ?> <tr> <td><?php echo $b[0];?> </td> <td><?php echo $b[1];?> </td> <td><?php echo $b[2];?> </td> <td><?php echo $b[3];?> </td> <td><?php echo $b[4];?> </td> <td><?php echo $b[5];?> </td> </tr> <?php } ?> <?php $arr=[ ['id'=>8,'name'=>'王***师','age'=>50,'sex'=>'男','email'=>'ou@php.cn','password'=>sha1('123456')], ['id'=>9,'name'=>'梅超风', 'age'=>35,'sex'=>'女','email'=>'hr@php.cn','password'=>sha1('123456')], ]; $date=''; foreach($arr as $c){ $date.='<tr>'; $date.="<td>$c[id]</td>"; $date.="<td>$c[name]</td>"; $date.="<td>{$c['age']}</td>"; $date.="<td>{$c['sex']}</td>"; $date.="<td>{$c['email']}</td>"; $date.="<td>{$c['password']}</td>"; $date.='</tr>'; } echo $date; ?> <!-- 自定义函数传值 --> <?php $arr=[ ['id'=>10,'name'=>'欧阳锋','age'=>57,'sex'=>1,'email'=>'ou@php.cn','password'=>sha1('123456')], ['id'=>11,'name'=>'郭靖', 'age'=>25,'sex'=>2,'email'=>'hr@php.cn','password'=>sha1('123456')], ]; function liuhong($lnn) { $result = ''; foreach ($lnn as $lnns) { $result .= '<tr>'; $result .= '<td>' . $lnns['id'] . '</td>'; $result .= '<td>' . $lnns['name'] . '</td>'; $result .= '<td>' . $lnns['age'] . '</td>'; $result .= '<td>' . ($lnns['sex'] ? '男' : '女') . '</td>'; $result .= '<td>' . $lnns['email'] . '</td>'; $result .= '<td>' . $lnns['password'] . '</td>'; $result .= '</tr>'; } return $result; } echo liuhong($arr) ?> </tbody> </table> <p>总计:11人</p> </body> </html>
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