php升级7.0后，导致mysql使用mysql_connect无法连接数据库，原因是php5.5.0中已弃用，并在7.0中被删除。参考：http://php.net/manual/zh/mysqlinfo.api.choosing.php
以下数据字典生成兼容php7.0及以上版本：
<?php
/**
* 自动生成mysql数据字典
*/
header("Content-type: text/html; charset=utf-8");
//配置数据库
$dbserver = "127.0.0.1";
$dbusername = "root"; // 数据库连接账号
$dbpassword = "root"; // 数据库连接密码
$database = "test"; // 数据库名
// 连接数据库
$mysql_conn = mysqli_connect("$dbserver", "$dbusername", "$dbpassword", "$database") or die("Mysql connect is error.");
mysqli_query($mysql_conn, 'SET NAMES utf8');
$table_result = mysqli_query($mysql_conn, 'show tables');
$no_show_table = array(); // 不需要显示的表
$no_show_field = array(); // 不需要显示的字段
//取得所有的表名
$tables = array();
while ($row = mysqli_fetch_array($table_result)) {
if (!in_array($row[0], $no_show_table)) {
$tables[]['TABLE_NAME'] = $row[0];
}
}
//循环取得所有表的备注及表中列信息
foreach ($tables as $k => $v) {
$sql = 'SELECT * FROM ';
$sql .= 'INFORMATION_SCHEMA.TABLES ';
$sql .= 'WHERE ';
$sql .= "table_name = '{$v['TABLE_NAME']}' AND table_schema = '{$database}'";
$table_result = mysqli_query($mysql_conn, $sql);
while ($t = mysqli_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}'";
$fields = array();
$field_result = mysqli_query($mysql_conn, $sql);
while ($t = mysqli_fetch_array($field_result)) {
$fields[] = $t;
}
$tables[$k]['COLUMN'] = $fields;
}
mysqli_close($mysql_conn);
$html = '';
//循环所有表
foreach ($tables as $k => $v) {
if (!in_array($v['TABLE_NAME'], $no_show_table)) {
$html .= '<h3>' . ($k + 1) . '、' . $v['TABLE_COMMENT'] . ' (' . $v['TABLE_NAME'] . ')</h3>';
$html .= '<table border="1" cellspacing="0" cellpadding="0" width="100%">';
$html .= '<tbody>';
$html .= '<tr>';
$html .= '<th>字段名</th>';
$html .= '<th>数据类型</th>';
$html .= '<th>默认值</th>';
$html .= '<th>允许非空</th>';
$html .= '<th>自动递增</th>';
$html .= '<th>备注</th>';
$html .= '</tr>';
foreach ($v['COLUMN'] as $f) {
if (!in_array($f['COLUMN_NAME'], $no_show_field)) {
$html .= '<tr>';
$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>';
$html .= '</table>';
}
}
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>数据字典</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="renderer" content="webkit|ie-comp|ie-stand">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<style>
body, td, th{font-family: "微软雅黑";font-size: 14px;}
.warp{margin: auto;width: 900px;}
.warp h3{margin: 0px;padding: 0px;line-height: 30px;margin-top: 10px;}
table{border-collapse: collapse;border: 1px solid #CCC;background: #efefef;}
table th{text-align: left;font-weight: bold;height: 26px;line-height: 26px;font-size: 14px;text-align: center;border: 1px solid #CCC; padding: 5px;}
table td{height: 20px;font-size: 14px;border: 1px solid #CCC;background-color: #fff;padding:5px;}
.c1{width: 120px;}
.c2{width: 120px;}
.c3{width: 150px;}
.c4{width: 80px;text-align:center;}
.c5{width: 80px;text-align:center;}
.c6{width: 270px;}
</style>
</head>
<body>
<div class="warp">
<h1 style="text-align:center;">数据字典自动生成</h1>
<?php echo $html; ?>
</div>
</body>
</html>
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