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PHP GMP gmp_testbit()功能

PHP语言提供了一个名为GMP gmp_testbit()的内置函数。该功能用于检测GMP号的某位是否设置。gmp_testbit()函数通过基值和索引值帮助识别一组数字。

语法

下面的语法显示了一个使用GMP编号的清晰位函数。

参数

该函数需要两个输入参数，$input_value和$index_value。

input_value美元: PHP 5.6及以上版本可为该函数的GMP编号参数。该函数用于测试具体的值。字符串值转换为函数的数值数据。
index_value美元:输入值($input_value)中检查的位的个数。

返回值

特定的价值。false值表示未设置特定值。

例子

下面的示例使用GMP参数测试特定位(gmp_testbit)函数。

例二:下面以使用GMP功能和参数查看该值的具体位为例。

            < !DOCTYPE html> <html> <body> <h4> PHP gmp_testbit() Function </h4> <p>该函数有助于测试给定值是否设置。< / p > < ?php$numbers = gmp_testbit("68", 2); $numbers2 = gmp_testbit("68", 1); $numbers3 = gmp_testbit("48", 3); $numbers4 = gmp_testbit("11", 1); echo "Test particular value is set? : "; var_dump($numbers); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers2); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers3); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers4); echo "<br/>"; ?> <div style="text-align:center;margin-bottom:5px;"><form action="http://www.baidu.com/baidu" target="_blank"><div bgcolor="#FFFFFF" style="text-align:center;"><input name="tn" type="hidden" value="baidu"><a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif" width="80px" height="29px" alt="Baidu" align="bottom" border="0"></a><input type="text" name="word" size="30" placeholder="" value=""><input type="submit" value="baidu"></div></form></div><div id="so360" style="text-align:center;margin-bottom:5px;"><form action="https://www.so.com/" target="_blank" id="so360form"><img src="http://p1.qhimg.com/d/_onebox/search.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="so360_keyword" placeholder="" value="">  <input type="submit" id="so360_submit" value="360"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div id="sogou" style="text-align:center;margin-bottom:5px;"><form action="https://www.sogou.com/" target="_blank" id="so360form"><img src="https://www.sogou.com/web/index/images/logo_440x140.v.4.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="sogou.com_keyword" placeholder="" value="">  <input type="submit" id="sogou_submit" value="sougou"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div align="center"><a target="_blank" href="/sitemap.xml">map</a></div></body> </html>
           

输出:

下图显示了GMP gmp_testbit()函数的输出。

Example2:下面的示例使用负输入参数检查值的特定位。

            < !DOCTYPE html> <html> <body> <h4> PHP gmp_testbit() Function </h4> <p>该函数有助于测试给定值是否设置。< / p > < ?php$numbers = gmp_testbit("68", -2); $numbers4 = gmp_testbit("-68", 2); $numbers2 = gmp_testbit("-16", 4); $numbers3 = gmp_testbit("-30", -3); echo "Test perticular value is set? : "; var_dump($numbers); echo "<br/>"; echo "Test perticular value is set? : "; var_dump($numbers4); echo "<br/>"; echo "Test perticular value is set? : "; var_dump($numbers2); echo "<br/>"; echo "Test perticular value is set? : "; var_dump($numbers3); echo "<br/>"; ?> <div style="text-align:center;margin-bottom:5px;"><form action="http://www.baidu.com/baidu" target="_blank"><div bgcolor="#FFFFFF" style="text-align:center;"><input name="tn" type="hidden" value="baidu"><a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif" width="80px" height="29px" alt="Baidu" align="bottom" border="0"></a><input type="text" name="word" size="30" placeholder="" value=""><input type="submit" value="baidu"></div></form></div><div id="so360" style="text-align:center;margin-bottom:5px;"><form action="https://www.so.com/" target="_blank" id="so360form"><img src="http://p1.qhimg.com/d/_onebox/search.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="so360_keyword" placeholder="" value="">  <input type="submit" id="so360_submit" value="360"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div id="sogou" style="text-align:center;margin-bottom:5px;"><form action="https://www.sogou.com/" target="_blank" id="so360form"><img src="https://www.sogou.com/web/index/images/logo_440x140.v.4.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="sogou.com_keyword" placeholder="" value="">  <input type="submit" id="sogou_submit" value="sougou"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div align="center"><a target="_blank" href="/sitemap.xml">map</a></div></body> </html>
           

输出:

下图显示了GMP gmp_testbit()函数的输出。

青年们:下面的示例使用该变量作为输入参数检查值的特定位。

            < !DOCTYPE html> <html> <body> <h4> PHP gmp_testbit() Function </h4> <p>该函数有助于测试给定值是否设置。< / p > < ?php$num = "30"; $num1 = "-55"; $num2 = "5"; $num3 = "3"; $num4 = "15"; $numbers = gmp_testbit($num, $num3); $numbers4 = gmp_testbit($num1, $num2); $numbers2 = gmp_testbit($num, $num4); $numbers3 = gmp_testbit($num1, $num4); echo "Test perticular value is set? : "; var_dump($numbers); echo "<br/>"; echo "Test perticular value is set? : "; var_dump($numbers4); echo "<br/>"; echo "Test perticular value is set? : "; var_dump($numbers2); echo "<br/>"; echo "Test perticular value is set? : "; var_dump($numbers3); echo "<br/>"; ?> <div style="text-align:center;margin-bottom:5px;"><form action="http://www.baidu.com/baidu" target="_blank"><div bgcolor="#FFFFFF" style="text-align:center;"><input name="tn" type="hidden" value="baidu"><a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif" width="80px" height="29px" alt="Baidu" align="bottom" border="0"></a><input type="text" name="word" size="30" placeholder="" value=""><input type="submit" value="baidu"></div></form></div><div id="so360" style="text-align:center;margin-bottom:5px;"><form action="https://www.so.com/" target="_blank" id="so360form"><img src="http://p1.qhimg.com/d/_onebox/search.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="so360_keyword" placeholder="" value="">  <input type="submit" id="so360_submit" value="360"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div id="sogou" style="text-align:center;margin-bottom:5px;"><form action="https://www.sogou.com/" target="_blank" id="so360form"><img src="https://www.sogou.com/web/index/images/logo_440x140.v.4.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="sogou.com_keyword" placeholder="" value="">  <input type="submit" id="sogou_submit" value="sougou"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div align="center"><a target="_blank" href="/sitemap.xml">map</a></div></body> </html>
           

输出:

下图显示了GMP gmp_testbit()函数的输出。

Example4:下面的示例使用变量和GMP参数作为输入数据来检查值的具体位。

            < !DOCTYPE html> <html> <body> <h4> PHP gmp_testbit() Function </h4> <p>该函数有助于测试给定值是否设置。< / p > < ?php$num = gmp_init("30"); $num1 = gmp_neg("-55"); $num5 = gmp_com("-2055"); $num6 = gmp_abs("-155"); $num2 = "5"; $num3 = "3"; $num4 = "2"; $numbers = gmp_testbit($num, $num3); $numbers4 = gmp_testbit($num1, $num2); $numbers2 = gmp_testbit($num5, $num4); $numbers3 = gmp_testbit($num6, $num4); echo "Test particular value is set? : "; var_dump($numbers); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers4); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers2); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers3); echo "<br/>"; ?> <div style="text-align:center;margin-bottom:5px;"><form action="http://www.baidu.com/baidu" target="_blank"><div bgcolor="#FFFFFF" style="text-align:center;"><input name="tn" type="hidden" value="baidu"><a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif" width="80px" height="29px" alt="Baidu" align="bottom" border="0"></a><input type="text" name="word" size="30" placeholder="" value=""><input type="submit" value="baidu"></div></form></div><div id="so360" style="text-align:center;margin-bottom:5px;"><form action="https://www.so.com/" target="_blank" id="so360form"><img src="http://p1.qhimg.com/d/_onebox/search.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="so360_keyword" placeholder="" value="">  <input type="submit" id="so360_submit" value="360"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div id="sogou" style="text-align:center;margin-bottom:5px;"><form action="https://www.sogou.com/" target="_blank" id="so360form"><img src="https://www.sogou.com/web/index/images/logo_440x140.v.4.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="sogou.com_keyword" placeholder="" value="">  <input type="submit" id="sogou_submit" value="sougou"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div align="center"><a target="_blank" href="/sitemap.xml">map</a></div></body> </html>
           

输出:

下图显示了GMP gmp_testbit()函数的输出。

Example5:下面的示例使用变量和GMP参数作为输入数据来检查值的具体位。这里，我们使用二进制值作为输入基数。

            < !DOCTYPE html> <html> <body> <h4> PHP gmp_testbit() Function </h4> <p>该函数有助于测试给定值是否设置。< / p > < ?php$num = gmp_init("1111", 2); $num1 = gmp_init("-1101", 2); $num5 = gmp_init("1010", 2); $num6 = gmp_init("-1010", 2); $num2 = "5"; $num3 = "3"; $num4 = "2"; $numbers = gmp_testbit($num, $num3); $numbers4 = gmp_testbit($num1, $num2); $numbers2 = gmp_testbit($num5, $num4); $numbers3 = gmp_testbit($num6, $num4); echo "Test particular value is set? : "; var_dump($numbers); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers4); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers2); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers3); echo "<br/>"; ?> <div style="text-align:center;margin-bottom:5px;"><form action="http://www.baidu.com/baidu" target="_blank"><div bgcolor="#FFFFFF" style="text-align:center;"><input name="tn" type="hidden" value="baidu"><a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif" width="80px" height="29px" alt="Baidu" align="bottom" border="0"></a><input type="text" name="word" size="30" placeholder="" value=""><input type="submit" value="baidu"></div></form></div><div id="so360" style="text-align:center;margin-bottom:5px;"><form action="https://www.so.com/" target="_blank" id="so360form"><img src="http://p1.qhimg.com/d/_onebox/search.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="so360_keyword" placeholder="" value="">  <input type="submit" id="so360_submit" value="360"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div id="sogou" style="text-align:center;margin-bottom:5px;"><form action="https://www.sogou.com/" target="_blank" id="so360form"><img src="https://www.sogou.com/web/index/images/logo_440x140.v.4.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="sogou.com_keyword" placeholder="" value="">  <input type="submit" id="sogou_submit" value="sougou"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div align="center"><a target="_blank" href="/sitemap.xml">map</a></div></body> </html>
           

输出:

下图显示了GMP gmp_testbit()函数的输出。

Example6:下面的示例使用变量和GMP参数作为输入数据来检查值的具体位。这里，我们使用整数值作为输入基数。

            < !DOCTYPE html> <html> <body> <h4> PHP gmp_testbit() Function </h4> <p>该函数有助于测试给定值是否设置。< / p > < ?php$num = gmp_init("1111", 10); $num1 = gmp_init("-1101", 10); $num5 = gmp_init("1010", 10); $num6 = gmp_init("-1010", 10); $num2 = "5"; $num3 = "3"; $num4 = "2"; $numbers = gmp_testbit($num, $num3); $numbers4 = gmp_testbit($num1, $num2); $numbers2 = gmp_testbit($num5, $num4); $numbers3 = gmp_testbit($num6, $num4); echo "Test particular value is set? : "; var_dump($numbers); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers4); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers2); echo "<br/>"; echo "Test particular value is set? : "; var_dump($numbers3); echo "<br/>"; ?> <div style="text-align:center;margin-bottom:5px;"><form action="http://www.baidu.com/baidu" target="_blank"><div bgcolor="#FFFFFF" style="text-align:center;"><input name="tn" type="hidden" value="baidu"><a href="http://www.baidu.com/"><img src="http://img.baidu.com/img/logo-80px.gif" width="80px" height="29px" alt="Baidu" align="bottom" border="0"></a><input type="text" name="word" size="30" placeholder="" value=""><input type="submit" value="baidu"></div></form></div><div id="so360" style="text-align:center;margin-bottom:5px;"><form action="https://www.so.com/" target="_blank" id="so360form"><img src="http://p1.qhimg.com/d/_onebox/search.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="so360_keyword" placeholder="" value="">  <input type="submit" id="so360_submit" value="360"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div id="sogou" style="text-align:center;margin-bottom:5px;"><form action="https://www.sogou.com/" target="_blank" id="so360form"><img src="https://www.sogou.com/web/index/images/logo_440x140.v.4.png" width="100px" height="25px"> <input type="text" autocomplete="off" name="q" id="sogou.com_keyword" placeholder="" value="">  <input type="submit" id="sogou_submit" value="sougou"> <input type="hidden" name="ie" value="gbk"><input type="hidden" name="src" value="zz"> <input type="hidden" name="site" value="so.com"> <input type="hidden" name="rg" value="1"></form></div><div align="center"><a target="_blank" href="/sitemap.xml">map</a></div></body> </html>
           

输出:

下图显示了GMP gmp_testbit()函数的输出。