Implode a two dimensional array ....

[jonaofarc]

Guys Iam freaking out ... basically Iam using this script that returns a list of zip codes in a certain radius... so the array that it returns looks like this...

 

Array ( [97214] => 0 [97293] => 0.48 [97232] => 0.69 [97242] => 0.84 [97258] => 1.45 [97204] => 1.45 [97255] => 1.61 [97253] => 1.61 [97208] => 1.61 [97228] => 1.61 [97240] => 1.61 )

 

However I need to be able to just have the zip code alone so I can use it in sql by using the IN statement to return a list of place in X amount of Miles so essential I need this array in this format

 

97214, 97293, 97232, 97242 and so on....

 

Thank you guys so much in advance!

[doni49]

1) That's not a 2d array--that's 1d but the keys are not integer based.

 

2) What you want to do is get an array of the keys and implode them.  Assuming that your array is called $zip1:

 

$zip2 = array_keys($zip1);
$zipstring = implode(",", $zip2);

[doni49]

I thought maybe I should further explain point number 1 from above.

 

By default, PHP uses integers for the array keys.  But you can use strings if you want--it can be very useful.

 

These all have the same effect--they will all produce a 1d array with integer based keys numbered from 0 to 1:

$ar1[]="test";
$ar1[]="test again";

$ar2[0]="test";
$ar2[1]="test again";

$ar3 = array("test", "test again");

 

While the following will create string based key names:

$ar4['First'] = 'Test';
$ar4['Second']='Test again';

$ar5=array('First'=>'Test', 'Second'=>'Test again');

 

Now the following is an example of a 2d array:

$ar6[0][0]="Test";
$ar6[0][1]="Testing";
$ar6[1][0]="keep going";
$ar6[1][1]="still going";

[jonaofarc]

thank you