检查模型是否存在laravel
代码示例
laravel检查记录存在
$user = User::where('email', '=', Input::get('email'))->first();
if ($user === null) {
// user doesn't exist
}检查现有用户laravel eloquent
$users = User::where('email', '=', $request->input('email'))->first();
if ($users === null) {
// User does not exist
} else {
// User exits
}类似页面
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