[SOLVED] inserting into array

[taith]

anybody know an efficient way of appending to an array?

 

$array[]='test';
$array[]='test';
$array[]='test';
$array[]='test6';
$array[]='test';

 

say... i want to move test6 to the #2 position... and increase the other keys under it... by 1...?

 

i know i could make a function to do this... just didnt know if php had a built in function like that :-)

[chigley]

All credits to frost110 for this, I remember reading this post the other day:

 

<?php
function insertArray($array, $addDataArr, $pos) {
    $newKey = -1;
    foreach ($array as $key => $val) {
          if ($key == $pos) { 
                foreach ($addDataArr as $val) {
                      $newArray[$key++] = $val;
                }
                $newKey = $key;     
          }else {
              if (isset($newKey) && $newKey != -1) {
                    $newArray[$newKey++] = $val;
              }else {
                    $newArray[$key] = $val;
              }
          }
    }
}
?>

 

Probably not the best way but I think it works, I also think there is something like www.php.net/array_merge

 

But yea, I think the above will work, untested.

[per1os]

All credits to frost110 for this, I remember reading this post the other day:

 

<?php
function insertArray($array, $addDataArr, $pos) {
    $newKey = -1;
    foreach ($array as $key => $val) {
          if ($key == $pos) { 
                foreach ($addDataArr as $val) {
                      $newArray[$key++] = $val;
                }
                $newKey = $key;     
          }else {
              if (isset($newKey) && $newKey != -1) {
                    $newArray[$newKey++] = $val;
              }else {
                    $newArray[$key] = $val;
              }
          }
    }
}
?>

 

Probably not the best way but I think it works, I also think there is something like www.php.net/array_merge

 

But yea, I think the above will work, untested.

 

Go me.

[taith]

aah... so... no prebuilt way...

 

i made this one hwile i was waiting... lol

 

$array[]='1';
$array[]='2';
$array[]='3';
$array[]='4';
$array[]='5';
$array[]='6';
$array[]='7';

function array_resort($array, $value, $key){
$out=array();
for($i=0; $i<count($array); $i++){
  if($i<$key) $out[$i]=$array[$i];
  elseif($i==$key&&!$done){
   $done=true;
   $out[$key]=$value;
   $i--;
  }else $out[$i+1]=$array[$i];
}
return $out;
}
$array=array_resort($array,'test','2');
print_r($array);

[per1os]

well just for fun I updated my function to takin a single string, or a whole array. Fun stuff.

 

<?php
function array_insert($array, $add_data, $pos) {
    $new_key = -1;
    foreach ($array as $key => $val) {
          if ($key == $pos) { 
                if (is_array($add_data)) {
                foreach ($add_data as $val2) {
        	              $new_array[$key++] = $val2;
                	}
	}else {
		$new_array[$key++] = $add_data;
	}

                $new_key = $key;     
          }else {
	$index = ($new_key!=-1)?$new_key++:$key;
	$new_array[$index] = $val;
  }
    }
}
?>

 

Remember this is still un-tested.

[chigley]

I'm glad I'm not the only one who finds challenges and random coding fun

[per1os]

Nope, what would be cool is to create this for the core of php as a .dll =) Now that would be the fun part.

[chigley]

On that note, in the PHP source where abouts can you find the function sources? Would be interesting to have a nosy around..

[taith]

http://www.php.net/downloads.php

[chigley]

Yes but where in the source are the function source codes?

[taith]

sorry... havent looked at the source in ages... dont know offhand :-)

[per1os]

If you want to know, goto Core Hacking and ask, I am sure they know exactly where to go.