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get enum variables


lipun4u

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This function calculates all enum variables in a table

<?php
include("database.php"); 
function getEnumValues($table, $field) {
    $enum_array = array();
    $query = 'SHOW COLUMNS FROM `' . $table . '` LIKE "' . $field . '"';
    $result = mysql_query($query);
    $row = mysql_fetch_row($result);
$data =$row[1];
    preg_match_all('/\'(.*?)\'/', $data, $enum_array);
print_r($enum_array);
}
getEnumVAlues('shirt', 'style');
?>

 

the structure of the shirt table is

mysql> show columns from shirt;
+-------+---------------------------------------------+------+-----+---------+--
--------------+
| Field | Type                                        | Null | Key | Default | E
xtra          |
+-------+---------------------------------------------+------+-----+---------+--
--------------+
| id    | smallint(5) unsigned                        | NO   | PRI | NULL    | a
uto_increment |
| style | enum('t-shirt','polo','dress')              | NO   |     | NULL    |
              |
| color | enum('red','blue','orange','white','black') | NO   |     | NULL    |
              |
| owner | smallint(5) unsigned                        | NO   |     | NULL    |
              |
+-------+---------------------------------------------+------+-----+---------+--
--------------+
4 rows in set (0.03 sec)

 

Why the op array has two sub array with enum elements on each array ??

 

<body>

Array
(
    [0] => Array
        (
            [0] => 't-shirt'
            [1] => 'polo'
            [2] => 'dress'
        )

    [1] => Array
        (
            [0] => t-shirt
            [1] => polo
            [2] => dress
        )

)
</body>
</html>

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The first array contains results that matched the entire reg exp, the second are those that were matched within the first pair of brackets. You could use "PREG_SET_ORDER" like below to only return the first matches and after:

 

preg_match_all('/\'(.*?)\'/', $data, $enum_array, PREG_SET_ORDER);

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