mysql_field_type
(PHP 4, PHP 5, PECL mysql:1.0)
mysql_field_type — Get the type of the specified field in a result
說明
string mysql_field_type
( resource $result
, int $field_offset
)
mysql_field_type() is similar to the mysql_field_name() function. The arguments are identical, but the field type is returned instead.
參數
- result
-
回傳類型為 resource 的結果集。該結果集從 mysql_query() 的呼叫中得到。
- field_offset
-
數字形式的欄位偏移量。field_offset 開始於 0。如果 field_offset 不存在，系統會發出 E_WARNING 級別的警告信息。
Return值
The returned field type will be one of "int", "real", "string", "blob", and others as detailed in the » MySQL documentation.
範例
Example#1 mysql_field_type() example
<?php
mysql_connect("localhost", "mysql_username", "mysql_password");
mysql_select_db("mysql");
$result = mysql_query("SELECT * FROM func");
$fields = mysql_num_fields($result);
$rows = mysql_num_rows($result);
$table = mysql_field_table($result, 0);
echo "Your '" . $table . "' table has " . $fields . " fields and " . $rows . " record(s)\n";
echo "The table has the following fields:\n";
for ($i=0; $i < $fields; $i++) {
$type = mysql_field_type($result, $i);
$name = mysql_field_name($result, $i);
$len = mysql_field_len($result, $i);
$flags = mysql_field_flags($result, $i);
echo $type . " " . $name . " " . $len . " " . $flags . "\n";
}
mysql_free_result($result);
mysql_close();
?>
上例的輸出類似於：
Your 'func' table has 4 fields and 1 record(s) The table has the following fields: string name 64 not_null primary_key binary int ret 1 not_null string dl 128 not_null string type 9 not_null enum
註釋
Note: 為了保證向下相容性，可以使用下面的別名，但不贊成使用它： mysql_fieldtype()