can we discuss briefly about the efficient ways of Using Arrays in PHP ?

__________________
Thanks & Regards
Sabari...

A brief introduction to PHP Arrays:

In PHP we can do magic with the Array Functions which will allow you to interact with and manipulate arrays in various ways. Arrays are essential for storing, managing and operating on sets of variables.

Simple and multi-dimensional arrays are supported in PHP and it may be either user created or created by another function. There are specific database handling functions for populating arrays from database queries and several functions return arrays.

__________________
With,
J. Jeyaseelan
Everything Possible

Hi Guys,
Here i have two arrays
$a = array(0,2,3,4)
$b = array(2,4)

i want to get the new array which only have elements like array(0,3) which does not have the elements in $b

So in this case we have to use array_diff functions as like this

$newarray = array_diff($a,$b)

$newarray contains the elements as (0,3)

__________________
With,
J. Jeyaseelan
Everything Possible

hi all,

Applies the callback to the elements of the given array.

we can apply user defined function in each

element of an array by this function.

Eg:

we can change all values to lower string an array by array_map function

here example for that..

$inputarray = array("Hello","Buy It");

function funStrChange($pmArray)
{
return strtolower($pmArray);
}

$aResult = array_map("funStrChange", $inputarray);

now, $aResult is:
$aResult[0] = "hello";
$aResult[1] = "buy it";

hi all,

is it possible to wild card search in an array?

for eg:

$vSearchStr = "hi";
$Array = array("hello","hi mathew");

here, i want to get the key value for $vSearchStr:

how do i get the result for this?

can any one give sample for this?

__________________
Thanks & Regards
Sabari...

Hi sabari,

Its ok, but ive made one small change in your code. It is checking only case sensitive in array...

so i have changed just one function : ereg to eregi. Now its working case insensitive.


$vSearchStr = "hi";
$Array = array("hello","hi mathew");
$Search=array();
foreach($Array as $key => $value)
{
if(eregi($vSearchStr,$value))
{
$Search[$key]=$value;
}
}
print_r($key);

What is maximum size of a normal variable & array variable? OR is there any default size available? Pls help me. Thanks

Can anyone of you explain array_random ?

hi,

array_rand function gets the random values from an array.

$input = array("Neo", "Morpheus", "Trinity", "Cypher", "Tank");

$rand_keys = array_rand($input, 2);
//#-- 1st parameter is Array for your random entries
//#-- 2nd Parameter is number of picked element, ie, how many random you
//# want to get from this array

echo $input[$rand_keys[0]] . "\n";
echo $input[$rand_keys[1]] . "\n";