laravel检查表已列
if (Schema::hasTable('users')) {
// The "users" table exists...
}
if (Schema::hasColumn('users', 'email')) {
// The "users" table exists and has an "email" column...
}
检查表中存在db laravel
if (!Schema::hasTable('table_name')) {
// Code to create table
}
laravel移民检查表已列
// You may check for the existence of a table or column
// using the hasTable and hasColumn methods:
if (Schema::hasTable('users')) {
// The "users" table exists...
}
if (Schema::hasColumn('users', 'email')) {
// The "users" table exists and has an "email" column...
}