Zend Framework introductory tutorial: Detailed explanation of the usage of Zend_Registry component

The example in this article describes the usage of Zend_Registry component in Zend Framework. Share it with everyone for your reference, the details are as follows:

1. Object registry

Startup case:

<?php
require_once("Zend/Loader.php");
Zend_Loader::loadClass(&#39;Zend_Registry&#39;);
$member = array(
  "姓名"=>"张三",
  "性别"=>"女",
  "年龄"=>"13",
  "职业"=>"学生",
  "爱好"=>"玩游戏",
  "血型"=>"AB"
  );
$registry = new Zend_Registry($member);
echo "姓名为：";
echo $registry["姓名"];
echo "<p>";
echo "性别为：";
echo $registry["性别"];
echo "<p>";
echo "年龄为：";
echo $registry["年龄"];
echo "<p>";
echo "职业为：";
echo $registry["职业"];
echo "<p>";
echo "爱好为：";
echo $registry["爱好"];
echo "<p>";

Result For:

姓名为：张三
性别为：女
年龄为：13
职业为：学生
爱好为：玩游戏

2.set() method and get() method to set data and get data

Syntax:

Set the value Zend_Registry::set('index','value')
Get the value Zend_Registry::get('index')

Case:

<?php
require_once("Zend/Loader.php");
Zend_Loader::loadClass(&#39;Zend_Registry&#39;);
$member = array(
  "姓名"=>"张三",
  "性别"=>"女",
  "年龄"=>"13",
  "职业"=>"学生",
  "爱好"=>"玩游戏",
  "血型"=>"AB"
  );
Zend_Registry::set("registry",$member);
$registry = Zend_Registry::get("registry");
echo "姓名为：";
echo $registry["姓名"];
echo "<p>";
echo "性别为：";
echo $registry["性别"];
echo "<p>";
echo "年龄为：";
echo $registry["年龄"];
echo "<p>";
echo "职业为：";
echo $registry["职业"];
echo "<p>";
echo "爱好为：";
echo $registry["爱好"];
echo "<p>";

Explanation: The effect is equivalent to the result of new.

3. Object registry setInstance, getInstance

Example:

<?php
require_once("Zend/Loader.php");
Zend_Loader::loadClass(&#39;Zend_Registry&#39;);
$registry = new Zend_Registry();
Zend_Registry::setInstance($registry);
$registry->name = "Mike";
$registry->age = "30";
$registry = Zend_Registry::getInstance();
echo $registry->name;
echo "<p>";
echo $registry->age;
echo "<p>";
$registry->sex = "male";
echo $registry->sex;

Result:

Mike
30
male

Explanation: Through the setInstance method, you can set the value in the form of an object, and then obtain the value through getInstance.

4.isRegistered() to determine whether the index has a value.

Case:

<?php
require_once("Zend/Loader.php");
Zend_Loader::loadClass(&#39;Zend_Registry&#39;);
Zend_Registry::set("name","张三");
if(Zend_Registry::isRegistered("name")){
  echo "对象注册表name已经定义";
}else{
  echo "对象注册表name没有定义";
}
echo "<p>";
if(Zend_Registry::isRegistered("age")){
  echo "对象注册表age已经定义";
}else{
  echo "对象注册表age没有定义";
}

Result:

对象注册表name已经定义
对象注册表age没有定义

Description:

If defined, it can be detected.

5. Delete the static registry

Zend_Registry::_unsetInstance() method deletes the static registry

Case:

<?php
require_once("Zend/Loader.php");
Zend_Loader::loadClass(&#39;Zend_Registry&#39;);
Zend_Registry::set("name","张三");
echo "执行操作前：";
echo "<p>";
if(Zend_Registry::isRegistered("name")){
  echo "对象注册表name已经定义";
}else{
  echo "对象注册表name没有定义";
}
echo "<p>";
if(Zend_Registry::isRegistered("age")){
  echo "对象注册表age已经定义";
}else{
  echo "对象注册表age没有定义";
}
Zend_Registry::_unsetInstance("name");
echo "<p>";
echo "执行操作后：";
echo "<p>";
if(Zend_Registry::isRegistered("name")){
  echo "对象注册表name已经定义";
}else{
  echo "对象注册表name没有定义";
}
echo "<p>";
if(Zend_Registry::isRegistered("age")){
  echo "对象注册表age已经定义";
}else{
  echo "对象注册表age没有定义";
}

Result:

执行操作前：
对象注册表name已经定义
对象注册表age没有定义
执行操作后：
对象注册表name没有定义
对象注册表age没有定义

Explanation: After executing the deletion method, the previous registration information will be gone.

Summary:

These are several commonly used methods and cases of Zend_Registry. Many functions that cannot be achieved with ordinary variables can be achieved through the registry.

I hope this article will be helpful to everyone’s PHP programming based on the Zend Framework framework.

For more detailed explanations on the usage of the Zend_Registry component in the Zend Framework introductory tutorial, please pay attention to the PHP Chinese website!