<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >gmp_scan0</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="Manual do PHP" HREF="index.html"><LINK REL="UP" TITLE="GMP" HREF="ref.gmp.html"><LINK REL="PREVIOUS" TITLE="gmp_random" HREF="function.gmp-random.html"><LINK REL="NEXT" TITLE="gmp_scan1" HREF="function.gmp-scan1.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Manual do PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.gmp-random.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.gmp-scan1.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.gmp-scan0" ></A >gmp_scan0</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN60792" ></A ><P > (PHP 4 >= 4.0.4, PHP 5)</P >gmp_scan0 -- Scan for 0</DIV ><DIV CLASS="refsect1" ><A NAME="AEN60795" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >gmp_scan0</B > ( resource a, int start )<BR ></BR ><P > Scans <CODE CLASS="parameter" >a</CODE >, starting with bit <CODE CLASS="parameter" >start</CODE >, towards more significant bits, until the first clear bit is found. Returns the index of the found bit. The index starts from 0. </P ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN60809" ></A ><P ><B >Exemplo 1. <B CLASS="function" >gmp_scan0()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#FF8000">// "0" bit is found at position 3. index starts at 0<br /></font><font color="#0000BB">$s1 </font><font color="#007700">= </font><font color="#0000BB">gmp_init</font><font color="#007700">(</font><font color="#DD0000">"10111"</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">);<br />echo </font><font color="#0000BB">gmp_scan0</font><font color="#007700">(</font><font color="#0000BB">$s1</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">) . </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /><br /></font><font color="#FF8000">// "0" bit is found at position 7. index starts at 5<br /></font><font color="#0000BB">$s2 </font><font color="#007700">= </font><font color="#0000BB">gmp_init</font><font color="#007700">(</font><font color="#DD0000">"101110000"</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">);<br />echo </font><font color="#0000BB">gmp_scan0</font><font color="#007700">(</font><font color="#0000BB">$s2</font><font color="#007700">, </font><font color="#0000BB">5</font><font color="#007700">) . </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P > The printout of the above program will be: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >3 7</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.gmp-random.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Principal</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.gmp-scan1.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >gmp_random</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.gmp.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >gmp_scan1</TD ></TR ></TABLE ></DIV ></BODY ></HTML >