<HTML ><HEAD ><TITLE >md5</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.44"><LINK REL="HOME" TITLE="PHP Manual" HREF="manual.html"><LINK REL="UP" TITLE="String functions" HREF="ref.strings.html"><LINK REL="PREVIOUS" TITLE="ltrim" HREF="function.ltrim.html"><LINK REL="NEXT" TITLE="Metaphone" HREF="function.metaphone.html"></HEAD ><BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.ltrim.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.metaphone.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.md5" >md5</A ></H1 ><DIV CLASS="refnamediv" ><A NAME="AEN25915" ></A >md5 -- Calculate the md5 hash of a string.</DIV ><DIV CLASS="refsect1" ><A NAME="AEN25918" ></A ><H2 >Description</H2 ><DIV CLASS="funcsynopsis" ><P ></P ><CODE CLASS="FUNCDEF" >string md5</CODE >(string str);<P ></P ></DIV ><P > Calculates the MD5 hash of <TT CLASS="parameter" ><I >str</I ></TT > using the <A HREF="http://ds.internic.net/rfc/rfc1321.txt" TARGET="_top" >RSA Data Security, Inc. MD5 Message-Digest Algorithm</A >. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.ltrim.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="manual.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.metaphone.html" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ltrim</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.strings.html" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Metaphone</TD ></TR ></TABLE ></DIV ></BODY ></HTML >