php-doc-en/reference/dbplus/functions/dbplus-find.xml
Hartmut Holzgraefe 5b9fc29465 revision tags added
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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
<!-- splitted from ./en/functions/dbplus.xml, last change in rev 1.5 -->
<refentry id="function.dbplus-find">
<refnamediv>
<refname>dbplus_find</refname>
<refpurpose>Set a constraint on a relation</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>dbplus_find</methodname>
<methodparam><type>resource</type><parameter>relation</parameter></methodparam>
<methodparam><type>array</type><parameter>constraints</parameter></methodparam>
<methodparam><type>mixed</type><parameter>tuple</parameter></methodparam>
</methodsynopsis>
&warn.experimental.func;
<para>
<function>dbplus_find</function> will place a constraint on the
given relation. Further calls to functions like
<function>dbplus_curr</function> or
<function>dbplus_next</function> will only return tuples matching
the given constraints.
</para>
<para>
Constraints are triplets of strings containing of a domain name,
a comparison operator and a comparison value. The
<parameter>constraints</parameter> parameter array may consist of
a collection of string arrays, each of which contains a domain, an
operator and a value, or of a single string array containing a
multiple of three elements.
</para>
<para>
The comparison operator may be one of the following strings:
'==', '&gt;', '&gt;=', '&lt;', '&lt;=', '!=', '~' for a regular
expression match and 'BAND' or 'BOR' for bitwise operations.
</para>
<para>
See also <function>dbplus_unselect</function>.
</para>
</refsect1>
</refentry>
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