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<?php var_dump( '{!' . (string)2 + 1 . '}' ); // The "." and "+" have the same precedence, so how operations are grouped // comes down to their associativity. Left associativity means the operations // were grouped like: var_dump( (('{!' . (string)2) + 1) . '}' );
Output for git.master, git.master_jit, rfc.property-hooks
string(4) "{!3}" Fatal error: Uncaught TypeError: Unsupported operand types: string + int in /in/i2HUO:8 Stack trace: #0 {main} thrown in /in/i2HUO on line 8
Process exited with code 255.

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