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The text driver allows an array of data to be processed like a read-only database table. The connect statement provides the data, as well as information about columns and names. No meta functions are supported. The *WHERE* SQL statement is ignored. In order to filter requests, An eval'd expression must be passed as a third argument.

object connect(
      array $dataArray,
      optional mixed $dataTypes=false,
      optional mixec $columnNames=false
      )

This is a 2 dimensional array of data. Optionally, the first row may contain the column names. If column names are not defined in first row, they must be defined in the third argument $columnNames.

The optional parameter $dataTypes provides an array of metaTypes that match the columns in the table. This array forces a type onto each column. If the array is not provided, the driver probes each column in an attempt to discern the data types in the column. If results are ambiguous, the driver assigns a metaType of 'C'. Better results are always obtained if the column types are defined, because the driver only recognize C, I and N types.

If the first row of the data array is not column names, the $columnNames parameter must provide a array of column names.

If provided, the number of columns in the 2^nd and 3^rd arguments must exactly match the number in the first.

mixed execute(
      string $sql
     optional bool $ignored=false
     optional string $evalStatement=false
      )

The execute() method will return a recordset. The recordset works like a normal recordset.

There is partial support for SQL parsing. We process the SQL using the following rules:

1. SQL ORDER BY's always work for the first column ordered. Subsequent cols are ignored.
2. All operations take place on the same table. In fact the FROM clause is ignored, you can use any name for the table.

1. To simplify code, all columns are returned, except when selecting 1 column.

$rs = $db->execute('select col1,col2 from table'); // sql ignored, will generate all cols
$rs = $db->execute('select col1 from table');
// sql accepted and processed -- any table name is accepted
$rs = $db->execute('select distinct col1 from table');
// sql accepted and processed

Where clauses are ignored, but searching with the 3rd parameter of execute() is permitted.

The 3rd argument to execute has to use PHP syntax and the driver will attempt to eval() it. You can even use PHP functions, for example

// 3rd parameter is evaled PHP code, not SQL, so watch the '==' vs. '='
$rs = $db->execute('select * from table', false, "\$COL1=='abc' and \$COL2==3");

The following SQL operations are not supported:

• GROUP BY, HAVING, other clauses
• Expression columns such as min(), max()
• Joins are not permitted

include 'adodb/adodb.inc.php';
 
$data = array(
      0=>array(10001,'1953-09-02','Georgi','Facello','M','1986-06-26'),
      1=>array(10002,'1964-06-02','Bezalel','Simmel','F','1985-11-21'),
      2=>array(10003,'1959-12-03','Parto','Bamford','M','1986-08-28'),
      3=>array(10004,'1954-05-01','Christian','Koblick','M','1986-12-01'),
      4=>array(10005,'1955-01-21','Kyoichi','Maliniak', 'M','1989-09-12'),
      5=>array(10006,'1953-04-20','Anneke','Preusig','F','1989-06-02')
);
 
$cols = array('EMPNO','BIRTH_DATE','FIRST_NAME','LAST_NAME','SEX','HIRE_DATE');
$metaTypes = array('I','D','C','C','C','D');
 
$db = ADONewConnection('text');
 
$db->connect($data, $metaTypes, $cols);
 
$sql = 'select * from table';
 
// Does not work with PHP 5.3 or later, see workaround below
$result = $db->execute($sql, false, "\$EMPNO==10005");
 
while ($r = $result->fetchRow()) {
  print_r($r);
}

For PHP 5.3 or later, the following workaround can be used (tested with ADOdb 5.20.15).

Replace the $result = $db→execute($sql, false, “\$EMPNO==10005”); statement in the above sample by the following code.

$db->evalAll = "\$EMPNO==10005";
$result = $db->execute($sql);
$db->evalAll = false;