<HTML ><HEAD ><TITLE >mcrypt_module_is_block_mode</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="Mcrypt Encryption Functions" HREF="ref.mcrypt.html"><LINK REL="PREVIOUS" TITLE="mcrypt_module_is_block_algorithm" HREF="function.mcrypt-module-is-block-algorithm.html"><LINK REL="NEXT" TITLE="mcrypt_module_open" HREF="function.mcrypt-module-open.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></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" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.mcrypt-module-is-block-algorithm.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.mcrypt-module-open.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mcrypt-module-is-block-mode" ></A >mcrypt_module_is_block_mode</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN49519" ></A ><P > (PHP 4 >= 4.0.2)</P >mcrypt_module_is_block_mode -- This function returns if the the specified mode outputs blocks or not</DIV ><DIV CLASS="refsect1" ><A NAME="AEN49522" ></A ><H2 >Description</H2 >bool <B CLASS="methodname" >mcrypt_module_is_block_mode</B > ( string mode [, string lib_dir])<BR ></BR ><P > This function returns <TT CLASS="constant" ><B >TRUE</B ></TT > if the mode outputs blocks of bytes or <TT CLASS="constant" ><B >FALSE</B ></TT > if it outputs just bytes. (eg. <TT CLASS="constant" ><B >TRUE</B ></TT > for cbc and ecb, and <TT CLASS="constant" ><B >FALSE</B ></TT > for cfb and stream). The optional <TT CLASS="parameter" ><I >lib_dir</I ></TT > parameter can contain the location where the mode module is on the system. </P ></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.mcrypt-module-is-block-algorithm.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.mcrypt-module-open.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mcrypt_module_is_block_algorithm</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.mcrypt.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >mcrypt_module_open</TD ></TR ></TABLE ></DIV ></BODY ></HTML >