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<title>Test if a field is nullable</title>
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<h1 class="refname">ingres_field_nullable</h1>
<p class="verinfo">(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0)</p><p class="refpurpose"><span class="refname">ingres_field_nullable</span> — <span class="dc-title">Test if a field is nullable</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.ingres-field-nullable-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>ingres_field_nullable</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$index</code></span>
)</div>
<p class="para rdfs-comment">
Test if a field is nullable.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<strong>Related Configurations</strong><br />
<p class="para">
See <a href="ingres.configuration.html#ini.ingres.array-index-start" class="link">ingres.array_index_start</a>
in <a href="ingres.configuration.html" class="link">Runtime Configuration</a>
</p>
</p></blockquote>
</div>
<div class="refsect1 parameters" id="refsect1-function.ingres-field-nullable-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">result</code></em></span>
<dd>
<p class="para">
The query result identifier
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">index</code></em></span>
<dd>
<p class="para">
<em><code class="parameter">index</code></em> is the field whose nullability will be
retrieved.
</p>
<p class="para">
The possible values of <em><code class="parameter">index</code></em> depend upon
the value
of <a href="ingres.configuration.html#ini.ingres.array-index-start" class="link">ingres.array_index_start</a>.
If <a href="ingres.configuration.html#ini.ingres.array-index-start" class="link">ingres.array_index_start</a>
is <em>1</em> (the default)
then <em><code class="parameter">index</code></em> must be
between <em>1</em> and the value returned
by <span class="function"><a href="function.ingres-num-fields.html" class="function">ingres_num_fields()</a></span>. If <a href="ingres.configuration.html#ini.ingres.array-index-start" class="link">ingres.array_index_start</a>
is <em>0</em> then <em><code class="parameter">index</code></em> must
be between <em>0</em>
and <span class="function"><a href="function.ingres-num-fields.html" class="function">ingres_num_fields()</a></span><em> -
1</em>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.ingres-field-nullable-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
<span class="function"><strong>ingres_field_nullable()</strong></span> returns <strong><code>TRUE</code></strong> if the
field can be set to the <strong><code>NULL</code></strong> value and <strong><code>FALSE</code></strong> if it cannot
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.ingres-field-nullable-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.ingres-query.html" class="function" rel="rdfs-seeAlso">ingres_query()</a> - Send an SQL query to Ingres</span></li>
<li class="member"> <span class="function"><a href="function.ingres-fetch-array.html" class="function" rel="rdfs-seeAlso">ingres_fetch_array()</a> - Fetch a row of result into an array</span></li>
<li class="member"> <span class="function"><a href="function.ingres-fetch-assoc.html" class="function" rel="rdfs-seeAlso">ingres_fetch_assoc()</a> - Fetch a row of result into an associative array</span></li>
<li class="member"> <span class="function"><a href="function.ingres-fetch-object.html" class="function" rel="rdfs-seeAlso">ingres_fetch_object()</a> - Fetch a row of result into an object</span></li>
<li class="member"> <span class="function"><a href="function.ingres-fetch-row.html" class="function" rel="rdfs-seeAlso">ingres_fetch_row()</a> - Fetch a row of result into an enumerated array</span></li>
</ul>
</p>
</div>
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