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<?php declare(strict_types = 1); class Example1 { public string $foo = 'UPPERCASE' { set => strtolower($value); } } class Example2 { public function __construct( public string $foo = 'UPPERCASE' { set => strtolower($value); } ) { } } echo new Example1()->foo; echo new Example2()->foo;
Output for git.master
UPPERCASEuppercase

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