<?xml version="1.0" encoding="ISO-8859-1"?>
<slide fontsize="6em">
	<title>Shared Memory</title>

	<example class="bit_larger" fontsize="1.5em"><![CDATA[<?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";

// 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);
?>]]></example>
<break/>
	<image filename='memory.jpg' align="center"/>
</slide>
