@ 2014-01-01T03:47:13Z <?php
$a = 0x80;
var_dump(base_convert($a, 16, 2),$a);
$b = -$a;
var_dump(base_convert($b, 16, 2), $b);
printf("%b", $b);
echo "\n";
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Output for 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 string(9) "100101000"
int(128)
Deprecated: Invalid characters passed for attempted conversion, these have been ignored in /in/qi62I on line 5
string(9) "100101000"
int(-128)
1111111111111111111111111111111111111111111111111111111110000000
Output for 4.3.0 - 4.3.11 , 4.4.0 - 4.4.9 , 5.0.0 - 5.0.5 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.38 , 7.0.0 - 7.0.33 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 string(9) "100101000"
int(128)
string(9) "100101000"
int(-128)
1111111111111111111111111111111111111111111111111111111110000000
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339.09 ms | 405 KiB | 455 Q