Numeric Arrays

@JDM71488Nov 21.2007 — #I usually populate numerically indexed arrays like so:

[code=php]for($i = 0; $i < 3; $i++)
 {
 $array[] = $i * $i;
 }[/code]

PHP.net has a complete guide on manipulating arrays. Scroll down to the function list. http://us2.php.net/manual/en/ref.array.php

@jasonahouleNov 21.2007 — #There are many ways to populate arrays. One good thing about arrays in PHP is that you don't have to define their size when you create it.

If you know all the values you want to put into an array then you can use the method above. There are also array_merge() and array_push() functions which will add values to your array.

Here are four different ways to populate an array and they all result in the same thing...

[code=php]
 <?php
 $myArray1 = array(1,2,3,4,5);
 
  $myArray2 = array();
  $myArray2[] = 1;
  $myArray2[] = 2;
  $myArray2[] = 3;
  $myArray2[] = 4;
  $myArray2[] = 5;
 
  $myArray3 = array(1);
  array_push($myArray3, 2);
  array_push($myArray3, 3);
  array_push($myArray3, 4);
  array_push($myArray3, 5);
 
  $myArray4 = array_merge(array(1,2,3), array(4,5));
 
  echo 'array 1: ';
   print_r($myArray1);
   echo '<br/><br/>';
 
  echo 'array 2: ';
   print_r($myArray2);
   echo '<br/><br/>';
 
  echo 'array 3: ';
   print_r($myArray3);
   echo '<br/><br/>';
 
  echo 'array 4: ';
   print_r($myArray4);
   echo '<br/><br/>';
 ?>
 [/code]

Numeric Arrays

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