57 lines
1.7 KiB
PHP
57 lines
1.7 KiB
PHP
<?php
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namespace app\common\utils;
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use support\Db;
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class TableInspector
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{
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/**
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* 获取某个表的所有字段信息
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*/
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public static function getColumns(string $table, ?string $database = null): array
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{
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$database = $database ?: Db::connection()->getDatabaseName();
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$columns = Db::select("
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SELECT COLUMN_NAME, DATA_TYPE, COLUMN_TYPE, IS_NULLABLE,
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COLUMN_DEFAULT, COLUMN_COMMENT, EXTRA
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FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?
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ORDER BY ORDINAL_POSITION
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", [$database, $table]);
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return array_map(function ($col) {
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return [
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'name' => $col->COLUMN_NAME,
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'type' => $col->DATA_TYPE,
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'column_type' => $col->COLUMN_TYPE,
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'nullable' => $col->IS_NULLABLE === 'YES',
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'default' => $col->COLUMN_DEFAULT,
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'comment' => $col->COLUMN_COMMENT,
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'extra' => $col->EXTRA,
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];
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}, $columns);
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}
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/**
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* 获取字段名列表
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*/
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public static function getColumnNames(string $table, ?string $database = null): array
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{
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return array_column(self::getColumns($table, $database), 'name');
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}
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/**
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* 获取字段注释 map：字段名 => 注释
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*/
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public static function getColumnComments(string $table, ?string $database = null): array
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{
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$columns = self::getColumns($table, $database);
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$map = [];
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foreach ($columns as $col) {
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$map[$col['name']] = $col['comment'];
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}
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return $map;
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}
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} |