11111
<p>PDOStatement::getColumnMeta
<LINK TITLE="PDO Functions" HREF="ref.pdo.html"><LINK TITLE="PDOStatement::getAttribute" HREF="function.pdostatement-getattribute.html"><LINK TITLE="PDOStatement::nextRowset" HREF="function.pdostatement-nextrowset.html">
<p><a href="function.pdostatement-getattribute.html">Пред.</a>
<p><a href="function.pdostatement-nextrowset.html">След.</a>
<p><h1><a name="function.PDOStatement-getColumnMeta"></a>PDOStatement::getColumnMeta</h1><div><a name="AEN124483"></a>
<p>(no version information, might be only in CVS)PDOStatement::getColumnMeta --
<p>Returns metadata for a column in a result set
<p></div><div><a name="AEN124486"></a><h2>Описание</h2>mixed PDOStatement::getColumnMeta (int column)
<p><table><tr><td>Внимание<tr><td>
<p>Эта функция является ЭКСПЕРИМЕНТАЛЬНОЙ.
<p>Поведение этой функции, ее имя и относящаяся к ней документация
<p>могут измениться в последующих версиях PHP без уведомления.
<p>Используйте эту функцию на свой страх и риск.</TABLE></div>
<p>- Retrieves the metadata for a 0-indexed column in a result set as an
<p>associative array.
<p><table><tr><td>Внимание<tr><td>
<p>- Not all PDO drivers support
<p>PDOStatement::getColumnMeta().
<p></TABLE></div></div><div><a name="AEN124501"></a><h2>Список параметров</h2>
<p>-
<p><DIV CLASS="variablelist"><DL><DT><VAR CLASS="parameter">column</DT><DD>
<p>- The 0-indexed column in the result set.
<p></DD></DL></div>
<p></div><div><a name="AEN124510"></a><h2>Возвращаемые значения</h2>
<p>- Returns an associative array containing the following values representing
<p>the metadata for a single column:
<p><DIV><a name="AEN124513"></a>
<p>Таблица 1. Column metadata<table><COL TITLE="c1"><COL TITLE="c2"><thEAD><tr><th>Name</TH><th>Value</TH></THEAD><tr><td>native_type<td>The PHP native type used to represent the column value.<tr><td><VAR CLASS="varname">driver:decl_type<td>The SQL type used to represent the column value in the database.
<p>If the column in the result set is the result of a function, this value
<p>is not returned by PDOStatement::getColumnMeta().
<p><tr><td>flags<td>Any flags set for this column.<tr><td>name<td>The name of this column as returned by the database.<tr><td>len<td>The length of this column. Normally -1 for
<p>types other than floating point decimals.<tr><td>precision<td>The numeric precision of this column. Normally
<p>0 for types other than floating point
<p>decimals.<tr><td>pdo_type<td>The type of this column as represented by the
<p>PDO_PARAM_* constants.</TABLE></div>
<p>- Returns <TT CLASS="constant">FALSE if the requested column does not exist in the result set,
<p>or if no result set exists.
<p></div><div><a name="AEN124558"></a><h2>Примеры</h2>
<p>- <table><tr><td><DIV><a name="AEN124561"></a>
<p>Пример 1. Retrieving column metadata
<p>- The following example shows the results of retrieving the metadata for a
<p>single column generated by a function (COUNT) in a PDO_SQLITE driver.
<p><table><tr><td><code>
<p>&lt;?php
<p>$select = $DB->query('SELECT COUNT(*) FROM fruit');
<p>$meta = $select->getColumnMeta(0);
<p>var_dump($meta);
<p>?>
<p>
<p></code></TABLE>
<p>Результат выполнения данного примера:<table><tr><td><PRE>array(6) {
<p>["native_type"]=&#62;
<p>string(7) "integer"
<p>["flags"]=&#62;
<p>array(0) {
<p>}
<p>["name"]=&#62;
<p>string(8) "COUNT(*)"
<p>["len"]=&#62;
<p>int(-1)
<p>["precision"]=&#62;
<p>int(0)
<p>["pdo_type"]=&#62;
<p>int(2)
<p>}</PRE></TABLE></div></TABLE>
<p></div><div><a name="AEN124567"></a><h2>Смотрите также</h2>
<p>-
<p><table><tr><td>PDOStatement::columnCount()<tr><td>PDOStatement::rowCount()</TABLE>
<p><a href="function.pdostatement-getattribute.html">Пред.</a>
<p><a href="index.html">Начало</a>
<p><a href="function.pdostatement-nextrowset.html">След.</a>
<p>PDOStatement::getAttribute
<p><a href="ref.pdo.html">Уровень выше</a>
<p>PDOStatement::nextRowset
22222
<div style="text-align:right;position:fixed;bottom:3px;right:3px;width:100%;z-index:999999;cursor:pointer;line-height:0;display:block;"><a target="_blank" href="https://www.freewebhostingarea.com" title="Free Web Hosting with PHP5 or PHP7"><img alt="Free Web Hosting" src="https://www.freewebhostingarea.com/images/poweredby.png" style="border-width: 0px;width: 180px; height: 45px; float: right;"></a></div>