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<h1 class="refname">ColumnResult::__construct</h1>
<p class="verinfo">(No version information available, might only be in Git)</p><p class="refpurpose"><span class="refname">ColumnResult::__construct</span> — <span class="dc-title">ColumnResult constructor</span></p>
</div>
<div class="refsect1 description" id="refsect1-mysql-xdevapi-columnresult.construct-description">
<h3 class="title">Description</h3>
<div class="constructorsynopsis dc-description">
<span class="modifier">private</span> <span class="methodname"><strong>mysql_xdevapi\ColumnResult::__construct</strong></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
Retrieve column metadata, such as its character set;
this is instantiated by the RowResult::getColumns() method.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-mysql-xdevapi-columnresult.construct-parameters">
<h3 class="title">Parameters</h3>
<p class="para">This function has no parameters.</p>
</div>
<div class="refsect1 examples" id="refsect1-mysql-xdevapi-columnresult.construct-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-2025">
<p><strong>Example #1 <span class="function"><strong>mysql_xdevapi\ColumnResult::__construct()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$session </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_xdevapi</span><span style="color: #007700">\</span><span style="color: #0000BB">getSession</span><span style="color: #007700">(</span><span style="color: #DD0000">"mysqlx://user:password@localhost"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-></span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP DATABASE IF EXISTS nonsense"</span><span style="color: #007700">)-></span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-></span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE DATABASE nonsense"</span><span style="color: #007700">)-></span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-></span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE nonsense.numbers (hello int, world float unsigned)"</span><span style="color: #007700">)-></span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$session</span><span style="color: #007700">-></span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT INTO nonsense.numbers values (42, 42)"</span><span style="color: #007700">)-></span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$schema </span><span style="color: #007700">= </span><span style="color: #0000BB">$session</span><span style="color: #007700">-></span><span style="color: #0000BB">getSchema</span><span style="color: #007700">(</span><span style="color: #DD0000">"nonsense"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$table </span><span style="color: #007700">= </span><span style="color: #0000BB">$schema</span><span style="color: #007700">-></span><span style="color: #0000BB">getTable</span><span style="color: #007700">(</span><span style="color: #DD0000">"numbers"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result1 </span><span style="color: #007700">= </span><span style="color: #0000BB">$table</span><span style="color: #007700">-></span><span style="color: #0000BB">select</span><span style="color: #007700">(</span><span style="color: #DD0000">'hello'</span><span style="color: #007700">,</span><span style="color: #DD0000">'world'</span><span style="color: #007700">)-></span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// Returns an array of ColumnResult objects<br /></span><span style="color: #0000BB">$columns </span><span style="color: #007700">= </span><span style="color: #0000BB">$result1</span><span style="color: #007700">-></span><span style="color: #0000BB">getColumns</span><span style="color: #007700">(); <br /><br />foreach (</span><span style="color: #0000BB">$columns </span><span style="color: #007700">as </span><span style="color: #0000BB">$column</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"\nColumn label " </span><span style="color: #007700">, </span><span style="color: #0000BB">$column</span><span style="color: #007700">-></span><span style="color: #0000BB">getColumnLabel</span><span style="color: #007700">();<br /> echo </span><span style="color: #DD0000">" is type " </span><span style="color: #007700">, </span><span style="color: #0000BB">$column</span><span style="color: #007700">-></span><span style="color: #0000BB">getType</span><span style="color: #007700">();<br /> echo </span><span style="color: #DD0000">" and is "</span><span style="color: #007700">, (</span><span style="color: #0000BB">$column</span><span style="color: #007700">-></span><span style="color: #0000BB">isNumberSigned</span><span style="color: #007700">() === </span><span style="color: #0000BB">0</span><span style="color: #007700">) ? </span><span style="color: #DD0000">"Unsigned." </span><span style="color: #007700">: </span><span style="color: #DD0000">"Signed."</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">// Alternatively<br /></span><span style="color: #0000BB">$result2 </span><span style="color: #007700">= </span><span style="color: #0000BB">$session</span><span style="color: #007700">-></span><span style="color: #0000BB">sql</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT * FROM nonsense.numbers"</span><span style="color: #007700">)-></span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// Returns an array of FieldMetadata objects<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$result2</span><span style="color: #007700">-></span><span style="color: #0000BB">getColumns</span><span style="color: #007700">());</span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Column label hello is type 19 and is Signed.
Column label world is type 4 and is Unsigned.
Array
(
[0] => mysql_xdevapi\FieldMetadata Object
(
[type] => 1
[type_name] => SINT
[name] => hello
[original_name] => hello
[table] => numbers
[original_table] => numbers
[schema] => nonsense
[catalog] => def
[collation] => 0
[fractional_digits] => 0
[length] => 11
[flags] => 0
[content_type] => 0
)
[1] => mysql_xdevapi\FieldMetadata Object
(
[type] => 6
[type_name] => FLOAT
[name] => world
[original_name] => world
[table] => numbers
[original_table] => numbers
[schema] => nonsense
[catalog] => def
[collation] => 0
[fractional_digits] => 31
[length] => 12
[flags] => 1
[content_type] => 0
)
)
</pre></div>
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