[RESOLVED] Newbie learning Array

Walle

<?php 
$Array = array();
$Array[]="aaa";
$Array[]="sss";
$Array[]="fff";

for($i=0;$i<=count($Array);$i++) {
   echo $i;
      echo "$Array[$i]<br>";
}
?>

Anyone know what’s wrong with this code. Last key is empty and give me some error etc. and want remove it. Somehow it generate one key to much, something like this

1
2
3
When it should be

1
2

I found this on site below with some example to loop through array, it work but want get rid of that empty key it generate
http://www.developer.com/lang/php/article.php/977371/Arrays-in-PHP.htm

Anyone know what problem is ? Or know some other and maybe better way to loop through array?

djjjozsi

lets see the examples on php.net => foreach()

<?php

$Array = array();
$Array[] = "aaa";
$Array[] = "sss";
$Array[] = "fff";

/* Values without key numbers*/
foreach( $Array AS $value ) {
    echo "$value<br />";
}

/* Values with key and value pairs*/
foreach( $Array AS $key => $value ) {
    echo "$key. index is: $value<br />" ;
}

?>

And count($Array) is equal to 3... and arrays usually started from 0 )
0 to 3 is 4 indexes.. 0 , 1 , 2 , 3

Walle

Wow! That’s work nice. Thanks.

djjjozsi

You are welcome. You should use the "Thread tools" to mark this thread as resolved, i think the icon is just an icon 🙂

bradgrafelman

As for your original question, your problem is within the definition of the for() loop:

for($i=0;$i<=count($Array);$i++) {

Note here that you're going from 0 up to the length of the array, inclusively. So for an array of 3 items (numbered 0-2), you're looping from 0 to 3 - obviously, the 4th index (numerically, 3) is extraneous. Change the '<=' to just '<' and it will work as expected.

Also, if you had error_reporting set to E_ALL (a must for a development server, IMHO), you should get PHP warnings about accessing an invalid array index on the last iteration of that for() loop.