» google_pagerank()
  » preg_replace()
  » imagecreatefrompng()
  » site_pageranks()
  » imagepng()
  » imagedestroy()
  » imagestring()
  » imagecolorallocate()
  » htmlentities()
  » preg_match()
  » fopen()
  » header()
  » getimagesize()
  » preg_match_all()
  » session_start()
  » htmlspecialchars()
  » ob_start()
  » ob_flush()
  » strstr()
  » flush()
  » strpos()
  » setcookie()
  » str_replace()
  » array2vars()
  » nl2br()
  » preg_split()
  » ereg()
  » ereg_replace()
  » urlencode()
  » readgzfile()

Become a sponsor for $15/month. Link is sitewide - PR5 homepage, 20+ PR4 pages, 90+ PR3 pages. Email dave[AT]icemelon[D0T]c0m.

(PHP 4 >= 4.0.4, PHP 5)

session_write_close -- Write session data and end session

Description

void session_write_close ( void )

End the current session and store session data.

Session data is usually stored after your script terminated without the need to call session_write_close() , but as session data is locked to prevent concurrent writes only one script may operate on a session at any time. When using framesets together with sessions you will experience the frames loading one by one due to this locking. You can reduce the time needed to load all the frames by ending the session as soon as all changes to session variables are done.

CXXI. Shared Memory Functions

Introduction

Shmop is an easy to use set of functions that allows PHP to read, write, create and delete Unix shared memory segments.

Requirements

No external libraries are needed to build this extension.

Installation

To use shmop you will need to compile PHP with the --enable-shmop parameter in your configure line.

Runtime Configuration

This extension has no configuration directives defined in php.ini .

Resource Types

Predefined Constants

This extension has no constants defined.

Examples

Example 1. Shared Memory Operations Overview

<?php
   
// Create 100 byte shared memory block with system id if 0xff3
$shm_id = shmop_open(0xff3, "c", 0644, 100);
if (!$shm_id) {
    echo "Couldn't create shared memory segment\n";
}

// Get shared memory block's size
$shm_size = shmop_size($shm_id);
echo "SHM Block Size: " . $shm_size . " has been created.\n";

// Lets write a test string into shared memory
$shm_bytes_written = shmop_write($shm_id, "my shared memory block", 0);
if ($shm_bytes_written != strlen("my shared memory block")) {
    echo "Couldn't write the entire length of data\n";
}

// Now lets read the string back
$my_string = shmop_read($shm_id, 0, $shm_size);
if (!$my_string) {
    echo "Couldn't read from shared memory block\n";
}
echo "The data inside shared memory was: " . $my_string . "\n";

//Now lets delete the block and close the shared memory segment
if (!shmop_delete($shm_id)) {
    echo "Couldn't mark shared memory block for deletion.";
}
shmop_close($shm_id);
   
?>

Table of Contents shmop_close  -- Close shared memory block shmop_delete  -- Delete shared memory block shmop_open  -- Create or open shared memory block shmop_read  -- Read data from shared memory block shmop_size  -- Get size of shared memory block shmop_write  -- Write data into shared memory block

Related Function(s)

shmop_close()

shmop_delete()

shmop_open()

shmop_read()

shmop_size()

shmop_write()