PHP实现获取并生成数据库字典的方法,php获取数据库字典
本文实例讲述了PHP实现获取并生成数据库字典的方法。分享给大家供大家参考,具体如下:
<?php /** * 生成mysql数据字典 */ header("Content-type:text/html;charset=utf-8"); // 配置数据库 $database = array(); $database['DB_HOST'] = 'localhost'; $database['DB_NAME'] = 'test'; $database['DB_USER'] = 'root'; $database['DB_PWD'] = ''; $mysql_conn = @mysql_connect("{$database['DB_HOST']}", "{$database['DB_USER']}", "{$database['DB_PWD']}") or die("Mysql connect is error."); mysql_select_db($database['DB_NAME'], $mysql_conn); $result = mysql_query('show tables', $mysql_conn); mysql_query("set names utf8"); // 取得所有表名 while ($row = mysql_fetch_array($result)) { $tables[]['TABLE_NAME'] = $row[0]; } // 循环取得所有表的备注及表中列消息 foreach($tables as $k => $v) { $sql = 'SELECT * FROM '; $sql .= 'information_schema.TABLES '; $sql .= 'WHERE '; $sql .= "table_name = '{$v['TABLE_NAME']}' AND table_schema = '{$database['DB_NAME']}'"; $table_result = mysql_query($sql, $mysql_conn); while ($t = mysql_fetch_array($table_result)) { $tables[$k]['TABLE_COMMENT'] = $t['TABLE_COMMENT']; } $sql = 'SELECT * FROM '; $sql .= 'information_schema.COLUMNS '; $sql .= 'WHERE '; $sql .= "table_name = '{$v['TABLE_NAME']}' AND table_schema = '{$database['DB_NAME']}'"; $fields = array(); $field_result = mysql_query($sql, $mysql_conn); while ($t = mysql_fetch_array($field_result)) { $fields[] = $t; } $tables[$k]['COLUMN'] = $fields; } mysql_close($mysql_conn); $html = ''; // 循环所有表 //print_r($tables); foreach($tables as $k => $v) { $html .= '<table border="1" cellspacing="0" cellpadding="0" align="center">'; $html .= '<caption>表名:' . $v['TABLE_NAME'] . ' ' . $v['TABLE_COMMENT'] . '</caption>'; $html .= '<tbody><tr><th>字段名</th><th>数据类型</th><th>默认值</th><th>允许非空</th><th>自动递增</th><th>备注</th></tr>'; $html .= ''; foreach($v['COLUMN'] AS $f) { $html .= '<td class="c1">' . $f['COLUMN_NAME'] . '</td>'; $html .= '<td class="c2">' . $f['COLUMN_TYPE'] . '</td>'; $html .= '<td class="c3">' . $f['COLUMN_DEFAULT'] . '</td>'; $html .= '<td class="c4">' . $f['IS_NULLABLE'] . '</td>'; $html .= '<td class="c5">' . ($f['EXTRA'] == 'auto_increment'?'是':' ') . '</td>'; $html .= '<td class="c6">' . $f['COLUMN_COMMENT'] . '</td>'; $html .= '</tr>'; } $html .= '</tbody></table></p>'; } /* 生成word */ //header ( "Content-type:application/vnd.ms-word" ); //header ( "Content-Disposition:attachment;filename={$database['DB_NAME']}数据字典.doc" ); /* 生成excel*/ //header ( "Content-type:application/vnd.ms-excel" ); //header ( "Content-Disposition:attachment;filename={$database['DB_NAME']}数据字典.xls" ); // 输出 echo '<html> <meta charset="utf-8"> <title>自动生成数据字典</title> <style> body,td,th {font-family:"宋体"; font-size:12px;} table,h1,p{width:960px;margin:0px auto;} table{border-collapse:collapse;border:1px solid #CCC;background:#efefef;} table caption{text-align:left; background-color:#fff; line-height:2em; font-size:14px; font-weight:bold; } table th{text-align:left; font-weight:bold;height:26px; line-height:26px; font-size:12px; border:1px solid #CCC;padding-left:5px;} table td{height:20px; font-size:12px; border:1px solid #CCC;background-color:#fff;padding-left:5px;} .c1{ width: 150px;} .c2{ width: 150px;} .c3{ width: 80px;} .c4{ width: 100px;} .c5{ width: 100px;} .c6{ width: 300px;} </style> <body>'; echo '<h1 id="database-DB-NAME-数据字典">'.$database['DB_NAME'].'数据字典</h1>'; echo '<p style="text-align:center;margin:20px auto;">生成时间:' . date('Y-m-d H:i:s') . '</p>'; echo $html; echo '<p style="text-align:left;margin:20px auto;">总共:' . count($tables) . '个数据表</p>'; echo '</body></html>'; ?>
更多关于PHP相关内容感兴趣的读者可查看本站专题:《PHP基于pdo操作数据库技巧总结》、《PHP运算与运算符用法总结》、《PHP网络编程技巧总结》、《PHP基本语法入门教程》、《php操作office文档技巧总结(包括word,excel,access,ppt)》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。

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。

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。

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。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

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。


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