@ 2014-01-01T04:35:27Z <?php
$a = "0x80";
var_dump(base_convert($a, 16, 2),$a);
printf("%b",$a);
echo "\n\n";
$b = -$a;
var_dump(base_convert($b, 16, 2), $b);
printf("%b", $b);
echo "\n";
$c = 100;
$d = ~$c;
var_dump($c,$d);
echo $c + $d;
echo "\n\n";
$a = 0x80;
var_dump($a,base_convert($a, 16, 2));
var_dump( hexdec("0x80") );
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Output for 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(8) "10000000"
string(4) "0x80"
0
Warning: A non-numeric value encountered in /in/R6meL on line 6
string(1) "0"
int(0)
0
int(100)
int(-101)
-1
int(128)
string(9) "100101000"
int(128)
Output for 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.31 , 7.4.0 - 7.4.25 , 7.4.27 - 7.4.33 string(8) "10000000"
string(4) "0x80"
0
Notice: A non well formed numeric value encountered in /in/R6meL on line 6
string(1) "0"
int(0)
0
int(100)
int(-101)
-1
int(128)
string(9) "100101000"
int(128)
Output for 7.0.0 - 7.0.20 , 7.3.32 - 7.3.33 , 7.4.26 string(8) "10000000"
string(4) "0x80"
0
string(1) "0"
int(0)
0
int(100)
int(-101)
-1
int(128)
string(9) "100101000"
int(128)
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 - 5.6.28 string(8) "10000000"
string(4) "0x80"
0
string(9) "100101000"
int(-128)
1111111111111111111111111111111111111111111111111111111110000000
int(100)
int(-101)
-1
int(128)
string(9) "100101000"
int(128)
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259.01 ms | 404 KiB | 401 Q