finding variable in array

[idire]

I receive a post data variable of say varx, I need to know that it corresponds to an array value of:

 

$c[0][0];

 

vary would correspond to $c[1][0]; and varz would correspond to $c[3][0]; ETC

 

 

How would I get php to know the association between the two variables without using an if statement for each variable

 

e.g.

 

if($_POST = var1) { echo $c[0][0]; }

if($_POST = var2) { echo $c[1][0]; }

if($_POST = var2) { echo $c[2][0]; }

 

However that would be very inefficient and take a lot of code, whats a better way? I was thinking of maybe an array of variables, and the position in the array corresponding to the first number in $c[0][0];

 

Suggestions?

[idire]

my possible solution is:

 

<?php
$skillay = array(vara, varb, varc)

$i = 0;
while($i < 26)
{
     if($skillay == $_POST) { $usedvar = $c[$i][0]; }
     $i++;
}

[Third_Degree]

you could use something like

 

<?php
$skillay = range('a','z');
?>

[.josh]

can you work your code to have the top layer be associative instead of numerical, so you can just do

 

$c['varx'][0]

$c['vary'][0]

$c['varz'][0]

 

?

[idire]

ok in a different question

 

is there any way to locate a number in an array then return the position in the array its in?

[papaface]

http://uk2.php.net/manual/en/function.array-search.php

[idire]

I cant see how that will return my position numbers?

 

my array is currently:

 

<?php
$levels = array('83', '174', '276', '388', '512', '650', '801', '969', '1154', '1358', '1584', '1833', '2107', '2411', '2746', '3115', '3523', '3973', '4470', '5018', '5624', '6291', '7028', '7842', '8740', '9730', '10824', '12031', '13363', '14833', '16456', '18247', '20224', '22406', '24815', '27473', '30408', '33648', '37224', '41171', '45529', '50339', '55649', '61512', '67983', '75127', '83014', '91721', '101333', '111945', '123660',  '136594', '150872', '166636', '184040', '203254', '224466', '247886', '273742', '302288', '333804', '368599', '407015', '449428', '496254', '547953', '605032', '668051', '737627', '814445', '899257', '992895', '1096278', '1210421', '1336443', '1475581', '1629200', '1798808', '1986068', '2192818', '2421087', '2673114', '2951373', '3258594', '3597792', '3972294', '4385776', '4842295', '5346332', '5902831', '6517253', '7195629', '7944614', '8771558', '9684577', '10692629', '11805606', '13034431');

[papaface]

Did you actually read the function info?

<?php
$levels = array('83', '174', '276', '388', '512', '650', '801', '969', '1154', '1358', '1584', '1833', '2107', '2411', '2746', '3115', '3523', '3973', '4470', '5018', '5624', '6291', '7028', '7842', '8740', '9730', '10824', '12031', '13363', '14833', '16456', '18247', '20224', '22406', '24815', '27473', '30408', '33648', '37224', '41171', '45529', '50339', '55649', '61512', '67983', '75127', '83014', '91721', '101333', '111945', '123660',  '136594', '150872', '166636', '184040', '203254', '224466', '247886', '273742', '302288', '333804', '368599', '407015', '449428', '496254', '547953', '605032', '668051', '737627', '814445', '899257', '992895', '1096278', '1210421', '1336443', '1475581', '1629200', '1798808', '1986068', '2192818', '2421087', '2673114', '2951373', '3258594', '3597792', '3972294', '4385776', '4842295', '5346332', '5902831', '6517253', '7195629', '7944614', '8771558', '9684577', '10692629', '11805606', '13034431');

echo array_search("174",$levels);      // returns 1, therefore in element 2 of the $levels array
?>

[idire]

Thanks sorry I missed that, was reading the examples at the bottom

 

what about if i have a number not in the array and i want to find the closest one above it

 

e.g. i have 150 and want to find 174

[.josh]

Then sort the array and make a loop that stops when you get to the first number that's greater than it.

[idire]

This seems to work, thanks

<?php
$var = 600;

$i = 0;

while($levels[$i] < $var)
{
     $tempvar = $levels[$i+1];
     $i++;
}
echo $tempvar;