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archived-doc-es/reference/shmop/examples.xml
2026-01-26 15:34:17 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 6ce09e40979a5cd7ee87a4799cbaf1d8d17a3dc1 Maintainer: jesusruiz Status: ready -->
<!-- Reviewed: no -->
<chapter xmlns="http://docbook.org/ns/docbook" xml:id="shmop.examples">
&reftitle.examples;
<section xml:id="shmop.examples-basic">
<title>Uso básico</title>
<example>
<title>Resumen de las operaciones con Memoria Compartida</title>
<programlisting role="php">
<![CDATA[
<?php
// Crear un segmento de memoria compartida de 100 bytes con un identificador igual a 0xff3
$shm_id = shmop_open(0xff3, "c", 0644, 100);
if (!$shm_id) {
echo "Couldn't create shared memory segment\n";
}
// Obtener tamaño del segmento de memoria compartida
$shm_size = shmop_size($shm_id);
echo "SHM Block Size: " . $shm_size . " has been created.\n";
// Escribir una cadena de prueba en la memoria compartida
$shm_bytes_written = shmop_write($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";
}
// Ahora vamos a leer la cadena de texto
$my_string = shmop_read($shm_id, 0, $shm_size);
if (!$my_string) {
echo "Couldn't read from shared memory block\n";
}
echo "The data inside shared memory was: " . $my_string . "\n";
//Ahora vamos a eliminar y cerrar el segmento de memoria compartida
if (!shmop_delete($shm_id)) {
echo "Couldn't mark shared memory block for deletion.";
}
shmop_close($shm_id);
?>
]]>
</programlisting>
</example>
</section>
</chapter>
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