<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >odbc_foreignkeys</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="ODBC Functions (Unified)" HREF="ref.uodbc.html"><LINK REL="PREVIOUS" TITLE="odbc_field_type" HREF="function.odbc-field-type.html"><LINK REL="NEXT" TITLE="odbc_free_result" HREF="function.odbc-free-result.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" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.odbc-field-type.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.odbc-free-result.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.odbc-foreignkeys" ></A >odbc_foreignkeys</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN161055" ></A ><P > (PHP 4, PHP 5)</P >odbc_foreignkeys -- Returns a list of foreign keys in the specified table or a list of foreign keys in other tables that refer to the primary key in the specified table</DIV ><DIV CLASS="refsect1" ><A NAME="AEN161058" ></A ><H2 >Description</H2 >resource <B CLASS="methodname" >odbc_foreignkeys</B > ( resource connection_id, string pk_qualifier, string pk_owner, string pk_table, string fk_qualifier, string fk_owner, string fk_table )<BR ></BR ><P > <B CLASS="function" >odbc_foreignkeys()</B > retrieves information about foreign keys. Returns an ODBC result identifier or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ><P > The result set has the following columns: <P ></P ><UL ><LI ><P >PKTABLE_QUALIFIER</P ></LI ><LI ><P >PKTABLE_OWNER</P ></LI ><LI ><P >PKTABLE_NAME</P ></LI ><LI ><P >PKCOLUMN_NAME</P ></LI ><LI ><P >FKTABLE_QUALIFIER</P ></LI ><LI ><P >FKTABLE_OWNER</P ></LI ><LI ><P >FKTABLE_NAME</P ></LI ><LI ><P >FKCOLUMN_NAME</P ></LI ><LI ><P >KEY_SEQ</P ></LI ><LI ><P >UPDATE_RULE</P ></LI ><LI ><P >DELETE_RULE</P ></LI ><LI ><P >FK_NAME</P ></LI ><LI ><P >PK_NAME</P ></LI ></UL > </P ><P > If <CODE CLASS="parameter" >pk_table</CODE > contains a table name, <B CLASS="function" >odbc_foreignkeys()</B > returns a result set containing the primary key of the specified table and all of the foreign keys that refer to it. </P ><P > If <CODE CLASS="parameter" >fk_table</CODE > contains a table name, <B CLASS="function" >odbc_foreignkeys()</B > returns a result set containing all of the foreign keys in the specified table and the primary keys (in other tables) to which they refer. </P ><P > If both <CODE CLASS="parameter" >pk_table</CODE > and <CODE CLASS="parameter" >fk_table</CODE > contain table names, <B CLASS="function" >odbc_foreignkeys()</B > returns the foreign keys in the table specified in <CODE CLASS="parameter" >fk_table</CODE > that refer to the primary key of the table specified in <CODE CLASS="parameter" >pk_table</CODE >. This should be one key at most. </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.odbc-field-type.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.odbc-free-result.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >odbc_field_type</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.uodbc.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >odbc_free_result</TD ></TR ></TABLE ></DIV ></BODY ></HTML >