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shmop_write
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shmop_write

Name

shmop_write — Stores a string in a shared memory segment.

Synopsis

int shmop_write(shmop_id, data, offset); int shmop_id: ID of a shared memory segment string data: Data to write to shared memory int offset: Number of bytes from beginning of segment at which to start writing

Returns

Number of bytes written; FALSE on error

Description

shmop_write() stores the string given in data into the shared memory segment identified by shmop_id . The string is written into the segment starting from the offset given by offset (counting starts from 0). You can test that all data was written by comparing the return value to the string length of the data .

Version

PHP 4 since 4.0.3

Example

Example 1184. Store a string in shared memory

if (@shmop_write($shm_id, $my_string, 0) != strlen($my_string)) {
    die("Failed to store data; reason: $php_errormsg\n");
}

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.