Array woes.

[Pikachu2000]

Alright, so I'm not the best with arrays, but I've never had to try this either. I have a text file I've parsed through into array elements. Each element has from 8-15 subelements. I'm fine to this point. where I'm running into a wall, is that indices 0-7 are fine the way they are, but indices 8 and up need to be implode()d to a single string, and end up in element 8 of the array. The rest can then be truncated, but that isn't a necessity, since it will be inserted into a DB, then the array will be destroyed.

 

 

There are 75-100,000 text file lines, so I need to do this in a loop. I've tried if/else conditionals on the key, with implode(), concatenation in to a string and reassignment to another element, and I just know I'm missing something stupidly simple. Here's the basic code I have, with the stuff that didn't work stripped out, along with an example of what the array looks like.

 

 

//This extracts data with type flag '2' from the text file

foreach( $nav_data as $k => $v ) {
$v = preg_replace('/\s+/', ' ', $v);
if( stripos($v, '2') === 0 ) {
	//$ndb[] = $v;
	$exp_ndb[] = explode(' ', trim(rtrim($v)) );
}


//This is what is giving me hell and not doing a damn thing, no matter what I do within it.

$i = 0;
foreach($exp_ndb as $val) {
foreach( $val as $k => $v ) {
// Tried other loops, unset() and assign, and conditionals here. All have been epic fail.
	$formatted_ndb[$i][] = $v;
}
$i++;
}

Array(    [0] => Array        (            [0] => 2            [1] => 38.08783340            [2] => -77.32499695            [3] => 0            [4] => 396            [5] => 50            [6] => 0.000            [7] => APH            [8] => A     [8]-up should end up in a different element together as a single-spaced string "A P HILL NDB"            [9] => P            [10] => HILL            [11] => NDB        )    [1] => Array        (            [0] => 2            [1] => 57.08382034            [2] => 9.68009281            [3] => 0            [4] => 398            [5] => 25            [6] => 0.000            [7] => GL            [8] => AALBORG            [9] => NDB        )

[kenrbnsn]

So what you're saying is that you're final array needs no more than 9 elements in it numbered 0 through 8.  If that's the case just use the third parameter to the explode function to limit the initial array to the 9 elements:

<?php
$exp_ndb[] = explode(' ', trim(rtrim($v)),9 );
?>

 

Ken

[PFMaBiSmAd]

array_slice is probably the best bet to get the 8th - 15th elements of the array you want for further processing.

[Pikachu2000]

Oh, for Pete's sake. See, I knew it would be something like that. I was overlooking the simple in pursuit of the absurdly complex.

 

Thanks kenrbnsn, that does exactly what I need.

 

And PFM, I'll look into array_slice() so I at least I'll have it for future reference. Thanks.