Cannot use apc_fetch to fetch a stored variable from the cache

问题

Environment: PHP: version 7.3 OS: Ubuntu 18.04

References followed:

PHP - apc_store

PHP - apc_fetch

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I cannot use apc_fetch from separate PHP script "file2" to access stored cache.

It does work when trigger apc_fetch from file1.

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File: 1_store_variable_in_memory.php

<?php

$token = "my_token_value";
apc_store('token_1', $token);
// var_dump(apc_fetch('token_1')); // Moved to file 2

File: 2_access_memory_stored_variable.php

<?php

var_dump(apc_fetch('token_1'));

Result from file 2:

bool(false)

Expected result from file 2:

string(14) "my_token_value"

回答1:

APC in PHP cli gets cleared after process is ended, moreover the memory is not shared between multiple php cli processes; because of it this is probably not the tool you want to use to solve your problem.

Try Redis or memcached if you need a cache that is persisted between processes.

来源：https://stackoverflow.com/questions/60054235/cannot-use-apc-fetch-to-fetch-a-stored-variable-from-the-cache