array question

Hi
I have an array like this:

<?php
$options[16][1]= array(" city","13");
$options[16][2]= array(" another city","15");
$options[16][3]= array(" another city","16");
$options[16][4]= array(" another city","17");
$options[16][5]= array(" another city","14");
$options[16][6]= array(" another city","18");
$options[16][7]= array(" another city ","19");
$options[16][8]= array(" another city ","20");


$options[17][1]= array(" another city","2");
$options[17][2]= array("  another city","3");
$options[17][3]= array(" another city","4");
$options[17][4]= array(" another city","1");
?>

PHP:

the format:
$options[state_id][a_number]= array(" city name","city_id");

such a file will be included in my script
assume that I have state_id and city_id; how can I find city name?
Thank you for your help and ideas

 

In this format

<? echo $options[17][4][0]; ?>

The state and city id and then the [0]

Regards

 

Thanks for your reply
but that is when the array format is:
$options[state_id][city_id]= array(" city name","a_number");
not now that is:
$options[state_id][a_number]= array(" city name","city_id");
and my known information is state_id and city_id and I need city name
any suggestions?

 

have a look the following code.

$options = array();
$options[16][1]= array(" city","13");
$options[16][2]= array(" another city","15");
$options[16][3]= array(" another city","16");
$options[16][4]= array(" another city","17");
$options[16][5]= array(" another city","14");
$options[16][6]= array(" another city","18");
$options[16][7]= array(" Wellington city ","19");
$options[16][8]= array(" another city ","20");



//okay let's find the following city name
$state_id = '16';
$city_id = '19';

foreach($options as $arr1){

    foreach($arr1 as $arr2){
    
       $total_arr2 = count($arr2);  
       for($x = 0; $x < $total_arr2; $x++){
            
            if(($arr2[1] == $city_id) && (array_search($arr1, $options) == $state_id)){
                echo $arr2[0];
                exit;
            }
       }
    }
}

PHP:

 

I think you really love PHP
Thanks

 

This should be ok for smaller scripts. For larger dealings, always use for loop instead of foreach, which makes a copy of the array and increases the overhead.

 

Here is the sample code

<?php
$tstats=array ( "160x600" => array ("0" => "21","1"=> "1" ,"2" => "0" ,"3" => "0" ), "300x250" => array ( "0" => "32" ,"1" => "2" ,"2" => "0" ,"3" => "0" ) );
//$products=array ( "160x600" => array ("0" => "21","1"=> "1" ,"2" => "0" ,"3" => "0" ));
//$result="";
while(list($k, $s) = each($tstats))
{
$prodects1=array ($k=>$s[0]);
///$result=array_push($tstats, $prodects1);
print "<br>";
//print_r($tstats);
}
?>

----------------
Thanks & regards
Lokananth

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