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https://issues.apache.org/jira/browse/THRIFT-342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909396#action_12909396
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David Reiss commented on THRIFT-342:
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array_unique doesn't actually work on complex types. I don't think there is a
clean solution to this problem, but one step might be to keep the current
representation for sets of ints and strings and use the flat array for sets of
complex types. I think the user has to be responsible for uniqueness in that
case.
> PHP: can't have sets of complex types
> -------------------------------------
>
> Key: THRIFT-342
> URL: https://issues.apache.org/jira/browse/THRIFT-342
> Project: Thrift
> Issue Type: Bug
> Components: PHP - Compiler, PHP - Library
> Environment: SVN trunk r743881
> Reporter: David Sklar
> Attachments: thrift-342.patch
>
>
> A setup like this:
> struct alice {
> 1: string bob
> }
> and another like this:
> struct charlie {
> 1: set<alice> david
> }
> causes problems because the generated PHP code looks like:
> ==
> case 1:
> if ($ftype == TType::SET) {
> $this->david = array();
> $_size0 = 0;
> $_etype3 = 0;
> $xfer += $input->readSetBegin($_etype3, $_size0);
> for ($_i4 = 0; $_i4 < $_size0; ++$_i4)
> {
> $elem5 = null;
> $elem5 = new alice();
> $xfer += $elem5->read($input);
> $this->david[$elem5] = true;
> }
> $xfer += $input->readSetEnd();
> } else {
> $xfer += $input->skip($ftype);
> }
> break;
> ===
> Using objects as array keys makes PHP cranky and the values can not be
> properly set. I think the solution to this is either:
> 1. Document that the PHP bindings do not support sets of complex types.
> (boooo!)
> 2. Modify the generated code so that the values are stored in array values
> not keys. (With some additional checks to ensure uniqueness, or perhaps just
> using spl_object_hash($theObject) as the array key.
> This seems similar to the issues raised in THRIFT-231 and THRIFT-162
> $this->david[$elem5] = true;
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