CascadiaPHP 2024

The SyncSharedMemory class

(PECL sync >= 1.1.0)


A cross-platform, native, consistent implementation of named shared memory objects.

Shared memory lets two separate processes communicate without the need for complex pipes or sockets. There are several integer-based shared memory implementations for PHP. Named shared memory is an alternative.

Synchronization objects (e.g. SyncMutex) are still required to protect most uses of shared memory.

Class synopsis

class SyncSharedMemory {
/* Methods */
public __construct(string $name, int $size)
public first(): bool
public read(int $start = 0, int $length = ?)
public size(): int
public write(string $string = ?, int $start = 0)

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