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<?php var_dump(abs('2000000000000000000000000000') >= bcsub('1000000000000000000000000000', '-1000000000000000000000000000')); var_dump(abs('-2000000000000000000000000000') >= bcsub('1000000000000000000000000000', '-1000000000000000000000000000')); var_dump(abs('2000000000000000000000000001') >= bcsub('1000000000000000000000000000', '-1000000000000000000000000000')); var_dump(abs('-2000000000000000000000000001') >= bcsub('1000000000000000000000000000', '-1000000000000000000000000000')); var_dump(abs('1999999999999999999999999999') >= bcsub('1000000000000000000000000000', '-1000000000000000000000000000')); var_dump(abs('-1999999999999999999999999999') >= bcsub('1000000000000000000000000000', '-1000000000000000000000000000'));