default:
throw new Exception ( "Unable to set $name " );
}
}
/**
*
* Gettor This is called when trying to access a non-existing property
*
* @access public
* @param string $name The name of the property
* @throw Exception if proplerty cannot be set
* @return string
*
*/
public function __get ( $name )
{
switch( $name )
{
case 'eol' :
return " " ;
case 'fields' :
return array();
case 'separator' :
return ',' ;
default:
throw new Exception ( " $name cannot be set" );
}
}
/**
*
* Over ride the parent current method and convert the lines
*
* @access public
* @return string The line as a CSV representation of the fixed width line, false otherwise
*
*/
public function current ()
{
if( parent :: current () )
{
$csv = '' ;
$fields = new cachingIterator ( new ArrayIterator ( $this -> fields ) );
foreach( $fields as $f )
{
$csv .= trim ( substr ( parent :: current (), $fields -> key (), $fields -> current () ) );
$csv .= $fields -> hasNext () ? $this -> separator : $this -> eol ;
}
return $csv ;
}
return false ;
}
} // end of class
?>
Example Usage示例用法
[U]复制代码[/U] 代码如下:width of each field ***/
$file -> fields = array( 0 => 10 , 10 => 15 , 25 => 20 , 45 => 25 );
/*** output the converted lines ***/
foreach( $file as $line )
{
echo $line ;
}
/*** a new instance ***/
$new = new fixed2CSV ( 'my_file.txt' );
/*** get only first and third fields ***/
$new -> fields = array( 0 => 10 , 25 => 20 );
/*** output only the first and third fields ***/
foreach( $new as $line )
{
echo $line ;
}