how to add data dynamically to an array - php

Question

I want to add two element in an array. The first one is the key and the second is the value. But I want to add it dynamically. I want to do it like the following code:
$arr="";
for( $i=0;$i<20;$i++ ) {
$arr[$i]=arr($i=>$i+1);
array_push($arr[$i]);
}
print_r($arr);
But of course it don't work. Could anyone tell me how to do it ?

Answer 1

Maybe you are trying to do this:
$arr = array(); // use array() instead of empty string
for( $i=0; $i<20; $i++ ) {
$arr[$i]= $i + 1;
}
print_r($arr);

Answer 2

$arr must be an array not string try this
$arr= array();
instead of
$arr="";

Answer 3

Not sure what you mean by all this, but you didn't really define the arrays correctly.
$arr = array();
for($i=0;$i<20;$i++) {
$arr[$i] = $i + 1;
array_push($arr[$i]);
}
print_r($arr);
Like answered above, you must use the array() function.

Answer 4

Try this way
$arr = array();
for($i=0;$i<20;$i++) {
$arr[$i] = $i+1;
}
print_r($arr);

Answer 5

This is tested and working
<?php
$stack = array("");
for($i=0;$i<20;$i++) {
array_push($stack, $i);
}
print_r($stack);
?>
this code will allow you to do what you request, unless I understood your requirement wrong?
Let me know if this is any help :)
If you are trying to create a numbered list, then use this instead:
<?php
$stack = array("0");
for($i=1;$i<20;$i++) {
array_push($stack, $i);
}
print_r($stack);
?>
Checkout the php manual: http://uk3.php.net/array_push
Josh.