php arrays, deleting elements

[php_novice2007]

Hi all,

 

Say I've got a php array of 10 elements, and I want to delete the 2nd, 5th, and the 8th element.

 

I can't seem to find a remove function in the manual..

 

can anyone help?

 

thanks!

[vijayfreaks]

Hi..

        see unset() function

        you can do this via;

        unset($arr[2]);

        unset($arr[5]);

        unset($arr[8]);

 

        will delete the 2nd, 5th, and the 8th element.

-vijay

[php_novice2007]

When I do unset($arr[2]), would all the elements move up and the 5th element becomes the 4th element and then I will have to keep track of the size of the array to unset the right indexes?

[chocopi]

well couldn't you just set them to nothing

 

$arr[2] = '';

$arr[5] = '';

$arr[8] = '';

 

or

 

$arr[2] = array();

$arr[5] = array();

$arr[8] = array();

 

Is that what you wanted ?

 

~ Chocopi

[sasa]

try and see

<?php
$a = array('aa','bb','cc','dd','ee','ff','gg','hh','ii','jj','kk');
unset($a[2]);
echo "\n<br />\n";
print_r($a);

//after you can rebuild keys

$a = array_values($a);
echo "\n<br />\n";
print_r($a);
?>