PHP hexdec() hanshu
Dingyi he Yòngfa
hexdec() hanshu ba shisanjishu huanzhuan cheng shizhishu.
Yufa
hexdec(hex_string)
| Canjushu | Miaoshu |
|---|---|
| hex_string | Bixu. Xingding yao huanzhuan de shisanjishu. |
Shuoming
fanhui yu hex_string Canjushu biaoshi de shisanjishu duiyu de shizhishu. hexdec() jiang yi ge shisanjishu zifuchuan huanzhuan cheng shizhishu. Neng huanzhuan de zuid大都shu wei 7fffffff, ji shizhishu de 2147483647. PHP 4.1.0 kaishi, zhe ge hanshu neng chuli da shu, zhe zhong qingkuang xia, ta hui fanhui float leixing.
hexdec() jiang yushou de suoyou feishisanjishu zifuchuan huanzhuan cheng 0. Zheyang, suoyou zuo mian de ling bei huanqie, dan you mian de ling jishi jishu zhong.
Shili
<?php
echo hexdec("1e");
echo hexdec("a");
echo hexdec("11ff");
echo hexdec("cceeff");
?>
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