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<?php $x = 'test'; $z = 'w'; function char($char) {return $char;} echo "this is a ${trim(' '.++$z.char(' '))}";
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Using ${expr} (variable variables) in strings is deprecated, use {${expr}} instead in /in/0dLop on line 6 this is a test

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