优化ctms-api语法、修复已知BUG；

主要修复ctms-api、dacms对PHP新版本的支持问题

dacms-home/views/site/signup.php

@@ -0,0 +1,36 @@
+<?php
+	
+	/* @var $this yii\web\View */
+	/* @var $form yii\bootstrap5\ActiveForm */
+	
+	/* @var $model \frontend\models\SignupForm */
+	
+	use yii\helpers\Html;
+	use yii\bootstrap5\ActiveForm;
+	
+	$this->title = '注册';
+	$this->params['breadcrumbs'][] = $this->title;
+?>
+<div class="site-signup">
+    <h1><?= Html::encode($this->title) ?></h1>
+
+    <p>请提供以下信息进行注册:</p>
+
+    <div class="row">
+        <div class="col-lg-5">
+			<?php $form = ActiveForm::begin(['id' => 'form-signup']); ?>
+			
+			<?= $form->field($model, 'username')->textInput(['autofocus' => TRUE]) ?>
+			
+			<?= $form->field($model, 'email') ?>
+			
+			<?= $form->field($model, 'password')->passwordInput() ?>
+
+            <div class="form-group">
+				<?= Html::submitButton(Yii::t('frontend', 'Signup'), ['class' => 'btn btn-primary', 'name' => 'signup-button']) ?>
+            </div>
+			
+			<?php ActiveForm::end(); ?>
+        </div>
+    </div>
+</div>