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https://issues.apache.org/jira/browse/THRIFT-3874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylwester Lachiewicz resolved THRIFT-3874.
------------------------------------------
    Fix Version/s: 0.24.0
       Resolution: Fixed

Resolving, though not by the route this ticket proposed - PRs #1041 and #1042 
were both closed unmerged.

The generator now emits {{public static array $tspec}} on each struct instead 
of an instance member, so the spec is class-level state that {{unserialize()}} 
cannot drop. That makes the reported failure structurally impossible rather 
than repaired. {{TBase::__wakeup()}} is now an explicit no-op with a comment 
explaining why. Landed under THRIFT-5991 in {{df8cc08ae}}, first released in 
0.24.0.

PR #3795 added regression coverage in 
{{BinarySerializerTest::testBinarySerializerAfterPhpUnserialize}}.

_This comment was created with AI assistance._

> _TSPEC is not populated on de-serialization of type classes
> -----------------------------------------------------------
>
>                 Key: THRIFT-3874
>                 URL: https://issues.apache.org/jira/browse/THRIFT-3874
>             Project: Thrift
>          Issue Type: Bug
>          Components: PHP - Compiler
>    Affects Versions: 0.9.3
>            Reporter: Aleksandr Kavun
>            Assignee: Volodymyr Panivko
>            Priority: Major
>             Fix For: 0.24.0
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> When type class which was serialized and deserialized by internal PHP 
> functions (for example, if data was stored to memcache and then retrieved) is 
> used in requests, thrift_extension gives an 'Attempt to send non-Thrift 
> object as a T_STRUCT' error.
> This is because thrift_extension binary_serialize() function is tries to 
> access to the $_TSPEC static property of object to determine it's target 
> structure. Static $_TSPEC array for generated PHP classes is populated in 
> __construct(). But when objects are deserialized, __construct() isn't called, 
> instead of that PHP calls __wakeup() function. So type class should be 
> instantiated once before sending it via Thrift.
> The solution is to move code that populates $_TSPEC out of constructor to the 
> generic function, and call this function both in __construct() and __wakeup() 
> functions.



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