Zend Framework Introductory Tutorials _php Examples of zend_session session operations

This example describes the zend_session session operation of the Zend Framework Introductory tutorial. Share to everyone for your reference, specific as follows:

Session namespace

Implementing a session

Code:

<?php
require_once "zend/session/namespace.php";
$myNamespace = new Zend_session_namespace (' Myspace ');
if (Isset ($myNamespace->numberofpagerequests))
{
  $myNamespace->numberofpagerequests++;
} else{
  $myNamespace->numberofpagerequests = 1;
}
echo "User's browsing times are:";
echo "<font size=\" 6\ "color=\" #ff0000 \ ">";
echo $myNamespace->numberofpagerequests;
echo "</font> times";

Results:

User browse times: 10 times

Traversing the session namespace

Code:

<?php
require_once "zend/session/namespace.php";
$myNamespace = new Zend_session_namespace (' Myspace ');
$myNamespace->webhost = "127.0.0.1";
$myNamespace->hostname = "localhost";
$myNamespace->user = "root";
$myNamespace->password = "123456";
$myNamespace->db_name = "Test";
$myNamespace->db_type = "Sqlite";
foreach ($myNamespace as $index => $value) {
  echo namespace MyNamespace: ". $index;
  echo "to". $value. " <p>\n ";
}

Results:

In the namespace MyNamespace: Webhost is 127.0.0.1
In the namespace MyNamespace: hostname is localhost
In namespace MyNamespace: User is root
In the namespace MyNamespace: password is 123456
In the namespace MyNamespace: Db_name is test
In the namespace MyNamespace: Db_type is SQLite

Comments:

It iterates through all the contents of the object's corresponding space. It's amazing.

Access Session Namespace

Code:

<?php
require_once "zend/session/namespace.php";
$login = new Zend_session_namespace (' other ');
$login->user = "Administrator";
if (Isset ($login->user)) {
  echo "\ $login->user already has a value of:";
  echo $login->user;
  unset ($login->user);
else{
  echo "\ $login->user no value";
}
echo "<p>";
if (Isset ($login->pass)) {
  echo "\ $login->pass already has a value of:";
  echo $login->pass;
  unset ($login->pass);
else{
  echo "\ $login->pass no value";
}
foreach ($login as $index => $value) {
  echo Namespace login: ". $index." To ". $value." <p>\n ";
}

Results:

$login->user already has a value of: Administrator
$login->pass No value

Advanced Applications for Sessions

There are two ways to open a session

First, use Zend_session::start () to open the session

II. New Zend_session_namespace ()

Lock Session Namespace

Code:

<?php
require_once "zend/session/namespace.php";
$test = new Zend_session_namespace (' Test ');
$test->name = "Jade Emperor";
$test->sex = "male";
$test->lock ();
if ($test->islocked ()) {
  echo session \ $test is locked! <p> ";
  The value of member name in the Echo namespace \ $test is: ";
  echo $test->name;
} else{
  echo "session \ $test has been unlocked! ";
}
echo "<p>";
$test->unlock ();
if ($test->islocked ()) {
  echo session \ $test is locked! <p> ";
  The value of member name in the Echo namespace \ $test is: ";
  echo $test->name;
} else{
  echo "session \ $test has been unlocked! ";
}

Results:

Session $test already locked!

The value of member name in the namespace $test is: Jade Emperor

Session $test already unlocked!

Comments:

Thus, locking does not affect the output of the result.

Analyzing source code

Public Function Lock ()
{
    self::$_namespacelocks[$this->_namespace] = true;
}
/**
* Unlock ()-Unmark a session/namespace to enable read & write
*
* @return void */public
func tion unlock ()
{
    unset (self::$_namespacelocks[$this->_namespace]);
/**
* Unlockall ()-Unmark all session/namespaces to enable read & write
*
* @return void
* * * public static function Unlockall ()
{
    self::$_namespacelocks = array ();
}
/**
* islocked ()-Return lock status, true if, with only if, read-only
*
* @return bool
/
Public function islocked ()
{return
    isset (self::$_namespacelocks[$this->_namespace]);

It just changes the parameters.

Set the lifecycle for a session

The Setexpirationseconds () method is set with the Setexpirationhops () method.

Code:

<?php
require_once "zend/session/namespace.php";
$s = new Zend_session_namespace (' temp ');
$s->a = "Apple";
$s->p = "pear";
$s->o = "orange";
$s->setexpirationseconds (a);
$s->setexpirationhops (2, ' a ');
$s->setexpirationhops (3, ' P ');
Echo has set life <p> for namespaces \ $s;

Set the lifecycle code, in fact it is for the namespace to set.

Test code:

<?php
require_once "zend/session/namespace.php";
$b = new Zend_session_namespace (' temp ');
echo "\ $b->a content is:". $b->a;
echo "<p>";
echo "\ $b->p content is:". $b->p;

The set lifecycle code is executed first, and the effect is seen in the execution of the test code.

First time:
$b->a content is: Apple
$b->p content is: Pear
Second time:
$b->a content is: Apple
$b->p content is: Pear
Third time:
$b->a content is:
$b->p content is: Pear
Fourth time:
$b->a content is:
$b->p content is:

Comment: Refresh two times, there will be disappeared. Then disappeared. The effect is the same for more than 60 seconds.

Analyze source code,

 Public function setexpirationseconds ($seconds, $variables = null) {if (Parent::$_wri Table = = False) {/** * @see zend_session_exception * * require_once ' zend/session/exception.php
      ';
    throw new Zend_session_exception (parent::_throw_not_writable_msg); } if ($seconds <= 0) {/** * @see zend_session_exception * * require_once ' Zend/session/ex
      Ception.php ';
    throw new Zend_session_exception (' Seconds must be positive. '); } if ($variables = = null) {//apply expiration to entire namespace $_session[' __zf ' [$this->_namespac
    e][' ENT ' = time () + $seconds;
      else {if (is_string ($variables)) {$variables = array ($variables); foreach ($variables as $variable) {if (!empty ($variable)) {$_session[' __zf '] [$this->_namesp
        ace][' ENVT ' [$variable] = time () + $seconds; }
      }
    }
}

It's actually based on PHP's original session. Only some of the features are expanded.

Public Function Setexpirationhops ($hops, $variables = null, $hopCountOnUsageOnly = False) {if (parent::$_writable = =
      = False) {/** * @see zend_session_exception * * require_once ' zend/session/exception.php ';
    throw new Zend_session_exception (parent::_throw_not_writable_msg); } if ($hops <= 0) {/** * @see zend_session_exception * * require_once ' ZEND/SESSION/EXCEP
      Tion.php ';
    throw new Zend_session_exception (' hops must be positive number. '); 
        } if ($variables = = null) {//apply expiration to entire namespace if ($hopCountOnUsageOnly = = False) {
      $_session[' __zf ' [$this->_namespace][' engh '] = $hops;
      else {$_session[' __zf '] [$this->_namespace][' ennh '] = $hops;
      } else {if (is_string ($variables)) {$variables = array ($variables); foreach ($variables as $variable) {if (!empty ($variable)) {if ($hopCountOnUsAgeonly = = false) {$_session[' __zf '] [$this->_namespace][' Envgh '] [$variable] = $hops;
          else {$_session[' __zf '] [$this->_namespace][' Envnh '] [$variable] = $hops;

 }
        }
      }
    }
}

The processing is placed in the constructor.

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I hope this article will help you with the PHP program design based on the Zend Framework.