mysql_result

(PHP 4, PHP 5)

mysql_result — Get result data

Увага

Це розширення застаріле, починаючи з PHP 5.5.0, та вилучене з PHP 7.0.0. Натомість використовуються розширення MySQLi або PDO_MySQL. Докладніше описано у керівництві MySQL: вибір API. Цю функцію можна замінити на:

mysqli_data_seek() in conjunction with mysqli_field_seek() and mysqli_fetch_field()
PDOStatement::fetchColumn()

Опис

function mysql_result(resource $result, int $row, mixed $field = 0): string

Retrieves the contents of one cell from a MySQL result set.

When working on large result sets, you should consider using one of the functions that fetch an entire row (specified below). As these functions return the contents of multiple cells in one function call, they're MUCH quicker than mysql_result(). Also, note that specifying a numeric offset for the field argument is much quicker than specifying a fieldname or tablename.fieldname argument.

Параметри

result: Результат типу resource для опрацювання, якого повертає функція mysql_query().
row: The row number from the result that's being retrieved. Row numbers start at 0.
field: The name or offset of the field being retrieved. It can be the field's offset, the field's name, or the field's table dot field name (tablename.fieldname). If the column name has been aliased ('select foo as bar from...'), use the alias instead of the column name. If undefined, the first field is retrieved.

Значення, що повертаються

The contents of one cell from a MySQL result set on success, or false on failure.

Приклади

Приклад #1 mysql_result() example

<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
    die('Could not connect: ' . mysql_error());
}
if (!mysql_select_db('database_name')) {
    die('Could not select database: ' . mysql_error());
}
$result = mysql_query('SELECT name FROM work.employee');
if (!$result) {
    die('Could not query:' . mysql_error());
}
echo mysql_result($result, 2); // outputs third employee's name

mysql_close($link);
?>

Примітки

Зауваження: Calls to mysql_result() should not be mixed with calls to other functions that deal with the result set.

Прогляньте також

mysql_fetch_row() - Get a result row as an enumerated array
mysql_fetch_array() - Fetch a result row as an associative array, a numeric array, or both
mysql_fetch_assoc() - Fetch a result row as an associative array
mysql_fetch_object() - Fetch a result row as an object

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User Contributed Notes 1 note

down

freedman at FreeFormIT dot com ¶

11 years ago

here's a rough replacement using mysqli:

if (!function_exists('mysql_result')) {
    function mysql_result($result, $number, $field=0) {
        mysqli_data_seek($result, $number);
        $row = mysqli_fetch_array($result);
        return $row[$field];
    }
}

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