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<?php $x = '0xa'; $y = 10; echo $x == $y; echo $x == (str)$y;
Output for 5.5.24 - 5.5.31, 5.6.8 - 5.6.17, 7.0.0 - 7.0.2
Parse error: syntax error, unexpected '$y' (T_VARIABLE), expecting ',' or ';' in /in/c9eT6 on line 6
Process exited with code 255.

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