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                pdo\_getcolumn() - 根據條件(AND連接)到指定的表中獲取一條記錄的指定字段 ### 說明 ~~~ string | int pdo_getcolumn($tablename, $condition = array(), $field); ~~~ ### 參數 * **$tablename**參數指定要查詢的數據表名,此處傳入的表名不要使用`tablename()`函數 * **$condition**參數指定查詢的條件,以是**AND**連接,支持大于,小于等范圍查詢 * **$field**要獲取的字段名稱 ### 示例 ~~~ //根據uid獲取用戶的用戶名 //生成的SQL等同于:SELECT username FROM ims_users WHERE uid = '1' LIMIT 1 $username = pdo_getcolumn('users', array('uid' => 1), 'username'); ~~~
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