PHP 打印二进制形式介绍
- $row[permission]=u;// or =chr(117)
-
- echo "
id = " . str_pad(decbin(ord($row[permission])),8,0,STR_PAD_LEFT);
- echo "
id = ";
- printf("%08b
",ord($row[permission]));
- ?>
- 输出:
- id = 01110101
- id = 1110101
-
printf解释:
% :占位符
0:用0填充未满的宽度
8 :共要8位
b :二进制模式
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