(PHP 4, PHP 5)
mysql_field_type — 取得結果集中指定字段的類(lèi)型
$result, int $field_offset): stringmysql_field_type() 和 mysql_field_name() 函數相似。參數完全相同，但返回的是字段類(lèi)型而不是字段名。字段類(lèi)型有“int”，“real”，“string”，“blob”以及其它，詳見(jiàn) ? MySQL 手冊。
示例 #1 mysql_field_type() 例子
<?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();
?>
以上例子將產(chǎn)生如下輸出：
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
為向下兼容仍然可以使用 mysql_fieldtype()，但反對這樣做。
resultresource 型的結果集。此結果集來(lái)自對 mysql_query() 的調用。
field_offset數值型字段偏移量。
field_offset 從 0 開(kāi)始。如果
field_offset 不存在，則會(huì )發(fā)出一個(gè)
E_WARNING 級別的錯誤
The returned field type
will be one of "int", "real",
"string", "blob", and others as
detailed in the ? MySQL
documentation.
示例 #2 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();
?>
以上例程的輸出類(lèi)似于：
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
注意:
為了向下兼容，可以使用下列已廢棄的別名： mysql_fieldtype()