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List:       php-general
Subject:    Re: [PHP] multi dimensional array question
From:       Piero Steinger <piero () the-admins ! ch>
Date:       2010-04-30 23:23:20
Message-ID: 4BDB6668.3030901 () the-admins ! ch
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Am 01.05.2010 00:57, schrieb Nick Balestra:
> hello everybody here is my array(s)
>
>
> $us_census = array('NY' => array('New York' => 8008278),
> 				   'CA' => array('Los Angeles' => 3694820,
> 				   				 'San Diego' => 1223400),
> 				   'IL' => array('Chicago' => 2896016),
> 				   'TX' => array('Houston' => 1953631,
> 				   				 'Dallas' => 1188580,
> 				   				 'San Antonio' => 1144646),
> 				   'PA' => array('Philadelphia' => 1517550),
> 				   'AZ' => array('Phoenix' => 1321045),
>  				   'MI' => array('Detroit' => 951270)); 
>
>
>
> print "<table><tr><th>State</th><th>City</th><th>Population</th><th>Total</th></tr>";
>
> 		   
> // $state is the key and $states is the value 
> foreach ($us_census as $state => $cities) {
>
> 	// $state is the key and $habitant is the value
> 	foreach ($cities as $city => $habitants){
>
>
> 		
> 		print "<tr><td>$state</td><td>$city</td><td>$habitants</td><td></td></tr>";
> 		
> 		
> 		}
> 	}
>
>
> Now i also want to be able to count the total population per state, i am stucked...
>   

array_sum() should do it :)


foreach ($us_census as $state => $cities) {
    $population_per_state = array_sum($cities);
}




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