# dba_handlers

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

dba_handlers — List all the handlers available

### 说明

dba_handlers ([ bool `$full_info` = `FALSE` ] ) : array

dba_handlers() list all the handlers supported by this extension.

### 参数

`full_info`

  Turns on/off full information display in the result.

### 返回值

Returns an array of database handlers. If `full_info` is set to `TRUE`, the array will be associative with the handlers names as keys, and their version information as value. Otherwise, the result will be an indexed array of handlers names.

> Note:

> When the internal cdb library is used you will see cdb and cdb_make.

### 范例

Example #1 dba_handlers() Example

    <?php

    echo "Available DBA handlers:\n";
    foreach (dba_handlers(true) as $handler_name => $handler_version) {
      // clean the versions
      $handler_version = str_replace('$', '', $handler_version);
      echo " - $handler_name: $handler_version\n";
    }

    ?>

以上例程的输出类似于：

    Available DBA handlers:
     - cdb: 0.75, Revision: 1.3.2.3
     - cdb_make: 0.75, Revision: 1.2.2.4
     - db2: Sleepycat Software: Berkeley DB 2.7.7: (08/20/99)
     - inifile: 1.0, Revision: 1.6.2.3
     - flatfile: 1.0, Revision: 1.5.2.4