将三维数组转换为二维数组

Question

The following is a 3-dimentional Array. I want every array like

array("captureTime"=>"2011-08-11 11:33:15", 
      "channel1_Data"=>"23.00", 
      "channel2_Data"=>"53.55")

to be stored into a $bookArray. I have used foreach loop. However, the output isn't correct.

Is there anyone can point out where error is? Thanks!

<?php
        $Books =array("0"=>array(
                                 array("captureTime"=>"2011-08-11 11:33:15", "channel1_Data"=>"23.00", "channel2_Data"=>"53.55"), 
                                 array("captureTime"=>"2011-08-12 11:33:15", "channel1_Data"=>"23.00", "channel2_Data"=>"53.55"),
                                 array("captureTime"=>"2011-08-13 11:33:15", "channel1_Data"=>"23.00", "channel2_Data"=>"53.55")
                                 ),
                      "1"=>array(
                                 array("captureTime"=>"2011-08-14 11:33:15", "channel1_Data"=>"23.00", "channel2_Data"=>"53.55")
                                 ),
                      "2"=>array(
                                 array("captureTime"=>"2011-08-15 11:33:15", "channel1_Data"=>"23.00", "channel2_Data"=>"53.55"), 
                                 array("captureTime"=>"2011-08-16 11:33:15", "channel1_Data"=>"23.00", "channel2_Data"=>"53.55")
                                 ),
                      );


        $bookArray = array();

        foreach($Books as $key=>$values){
            foreach($values as $subKey=>$subValue){
                $bookArray = $Books[$key][$subKey];

            }   
        }       
    ?>

Answer 1

It should be this instead:

$bookArray[] = $Books[$key][$subKey];

You forgot the [] append-to-array shorthand :)

p/s: you can replace $Books[$key][$subKey] with $subValue within the loop:

$bookArray[] = $subValue;