php cakephp: how to count elements of a nested array

Question

How to count elements of a nested array? I want to count elements of $student_info['Aptitude'].

I tried the following and I'm getting undefined index at the following code:

else if (count($student_info["Aptitude"])==0){ //no records for report card
         $this->Session->setFlash('Your child is a new student in our school. 
            He/She doesn\'t have records for a report card yet.');
            $this->redirect(array('controller'=>'pages','action'=>'home'));

Aptitude is an array within $student_info which has 4 arrays

var_dump($student_info) produces the following output. Aptitude array is on the last line. It doesn't have any elements:

array(1) { 
    [0]=> array(4) { 
        ["Student"]=> array(10) { 
            ["id"]=> string(2) "20" 
            ["name"]=> string(15) "Uma Palaniappan" 
            ["gender"]=> string(6) "Female" 
            ["dob"]=> string(10) "2007-04-26" 
            ["created"]=> string(19) "2011-12-29 10:14:03" 
            ["modified"]=> string(19) "2011-12-29 10:14:03" 
            ["merry_class_id"]=> string(1) "3" 
            ["merry_parent_id"]=> string(2) "25" 
            ["term1_comments"]=> NULL
            ["term2_comments"]=> NULL 
        } 
        ["MerryParent"]=> array(14) { 
            ["id"]=> string(2) "25" 
            ["initial"]=> string(2) "Mr" 
            ["name"]=> string(13) "Palaniappan K" 
            ["username"]=> string(7) "kpalani" 
            ["email"]=>string(20) "[email protected]" 
            ["password"]=> string(40) "43f5e1298f3b2478a9cd4ab7c6f5f703380dbcc9" 
            ["landline"]=> string(12) "044-77223399" 
            ["mobile"]=> string(10) "9860662309" 
            ["address"]=> string(15) "44 Megala Chowk" 
            ["state_id"]=> string(1) "6" 
            ["city_id"]=> string(3) "103" 
            ["postal_code"]=> string(6) "384733" 
            ["created"]=> string(19) "2011-12-29 10:14:03" 
            ["modified"]=> string(19) "2011-12-29 10:52:23" 
        } 

        ["MerryClass"]=> array(2) { 
            ["id"]=> string(1) "3" 
            ["class_name"]=> string(3) "LKG" 
        } 
        ["Aptitude"]=> array(0) { 
        } 
    } 
}

thank you.

Lol, hope that is test data or Mr Palaniappan K may get some unusual phone calls. — Mike Purcell
– Mike Purcell, Commented Apr 12, 2012 at 5:38

Basti · Accepted Answer · 2012-04-12 05:51:41Z

2

Use

if (count($student_info[0]["Aptitude"])==0)

instead. Please format your example code yourself the next time. You could have easily spotted this mistake yourself.

Consider using xdebug to have a more readable output for var_dump.

edited Apr 12, 2012 at 5:51

answered Apr 12, 2012 at 5:36

Basti

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Comments

itachi · Accepted Answer · 2012-04-12 05:37:48Z

1

else if (count($student_info[0]["Aptitude"])==0){ //no records for report card
     $this->Session->setFlash('Your child is a new student in our school. 
        He/She doesn\'t have records for a report card yet.');
        $this->redirect(array('controller'=>'pages','action'=>'home'));

you forgot the [0] index.

answered Apr 12, 2012 at 5:37

itachi

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Comments

thecodeparadox · Accepted Answer · 2012-04-12 06:20:54Z

0

Try this:

count(Set::extract('/Aptitude', $student_info))

edited Apr 12, 2012 at 6:20

answered Apr 12, 2012 at 5:49

thecodeparadox

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