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<?php $upgradeKeys = array( 'featured-listing', 'basic-pack', 'designer-blog', 'power-pack' ); $_upgradeKeys = array_diff( $upgradeKeys, array( 'featured-listing', 'basic-pack', 'designer-blog', 'power-pack' ) ); sort($_upgradeKeys); $upgradeKeys = $_upgradeKeys; $upgradeKeys[] = 'power-pack'; echo upgradeKeys[0];
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "upgradeKeys" in /in/nSCXb:22 Stack trace: #0 {main} thrown in /in/nSCXb on line 22
Process exited with code 255.

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