11 11, 2010

array_fill_keys

By | 2010-11-11T13:02:39+00:00 November 11th, 2010|Categories: PHP, Ruby|Tags: , , , |1 Comment

The array_fill_keys() function in PHP allows you to populate the values of an array while specifying its keys.

PHP

$keys = array('write', 'debug', 'execute');
$result = array_fill_keys($keys, 'code');
var_export($result);
// => array('write' => 'code', 'debug' => 'code', 'execute' => 'code')

To replicate this functionality in Ruby, we need to use a Hash object, since arrays in Ruby don’t use associative key/value pairs.

Ruby

keys = ['write', 'debug', 'execute']
result = keys.inject({}) do |hash, key| 
  hash[key] = 'code'
  hash 
end
p result
# => {"write"=>"code", "debug"=>"code", "execute"=>"code"}
19 10, 2010

array_merge

By | 2010-10-19T11:01:55+00:00 October 19th, 2010|Categories: PHP, Ruby|Tags: , , , , |1 Comment

The array_merge() function in PHP merges 2 arrays by appending the second array onto the first array, and returning the resulting array.

The way to do this in Ruby depends on the type of data – if dealing with associative arrays (known as a hash in Ruby), we can use the merge() method of the Ruby Hash class.

PHP

$user_details = array('name' => 'John', 'age' => 20);
$account_details = array('credits' => '50', 'id' => 4);

$user = array_merge($user_details, $account_details);

print_r($user);
/*
Array (
    [name] => John
    [age] => 20
    [credits] => 50
    [id] => 4
)
*/

Ruby

user_details = { :name => 'John', :age => 20 }
account_details = { :credits => 50, :id => 4 }

p user_details.merge(account_details);
# => {:credits=>50, :name=>"John", :id=>4, :age=>20}

Merging numeric arrays in Ruby is much easier as shown below (PHP example given first).

PHP

$start = array(1, 2, 3);
$finish = array(4, 5, 6);

$nums = array_merge($start, $finish);

print_r($nums);
/*
Array (
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
)
*/

Ruby

start  = [1, 2, 3];
finish = [4, 5, 6];

nums = start + finish;

p nums;
# => [1, 2, 3, 4, 5, 6]
13 10, 2010

array_fill

By | 2010-10-13T11:17:44+00:00 October 13th, 2010|Categories: PHP, Ruby|Tags: , , , , , |1 Comment

The array_fill() function in PHP allows an array to be populated (i.e. filled) with a particular value.

PHP

$a = array_fill(3, 5, 'php');
print_r($a);
/*
Array (
	[3] => php
	[4] => php
	[5] => php
	[6] => php
	[7] => php
)
*/

In Ruby this is not really possible because Ruby arrays must have their keys filled in the correct order, i.e. you cant skip assigning values to keys in a Ruby array. As such, the next best thing is to fill those values with nil, or use a hash instead.

Ruby

a = [nil] * 3 + ['php'] * 5;
puts a;
# => [nil, nil, nil, 'php', 'php', 'php', 'php', 'php']
19 04, 2010

array_flip

By | 2010-07-05T23:17:47+00:00 April 19th, 2010|Categories: PHP, Ruby|Tags: , , , |3 Comments

The array_flip() PHP function changes all the keys in an array into values, and all the values into keys.

PHP

$a = array('apple' => 1, 'ibm' => 2, 'sun' => 3);
$flipped = array_flip($a);
print_r($flipped);
/*
Array (
	[1] => apple
	[2] => ibm
	[3] => sun
)
*/

To replicate this functionality in Ruby, we will use a Hash object, since arrays in Ruby don’t use associative key / value pairs.

Ruby

hash = { "apple" => 1, "ibm" => 2, "sun" => 3 };
flipped = hash.invert;
p flipped;
# => {1 => "apple", 2 => "ibm", 3 => "sun"}

In PHP, the array_flip() function will over write any conflicting keys. The Ruby invert() method behaves the same – any keys which are the same as other keys will overwrite the previous one.

24 02, 2010

array_keys

By | 2010-02-24T12:31:01+00:00 February 24th, 2010|Categories: PHP, Ruby|Tags: , , |Comments Off on array_keys

The array_keys() function in PHP takes an array as it’s argument and returns all the keys in that array (as a numeric array).

PHP

$array = array('go' => 'green', 'stop' => 'red');
var_dump( array_keys($array) );
/*
Array (
	[0] => go
	[1] => stop
)
*/

To replicate this functionality in Ruby, we need to use a Hash object, since arrays in Ruby don’t use associative key/value pairs.

Ruby

array = { :go => 'green', :stop => 'red' };
puts array.keys;
# => [:go, :stop]
17 02, 2010

array_product

By | 2010-02-17T11:38:14+00:00 February 17th, 2010|Categories: PHP, Ruby|Tags: , , |Comments Off on array_product

The array_product() PHP function returns the product of all values in an array. In other words, it multiplies all values in the array together, and returns the result as a number.

PHP

$a = array('1', '2', '3');
$product_total = array_product($a);
echo $product_total;
// => 6 

Ruby

a = [ "1", "2", "3" ];
product_total = a.inject {|product, element| product * element }
puts product_total;
# => 6 
16 02, 2010

array_rand

By | 2010-02-16T15:18:42+00:00 February 16th, 2010|Categories: PHP, Ruby|Tags: , , , , , |1 Comment

The array_rand() function in PHP randomly selects one or more elements from an array.

PHP

$users = array('john', 'jane', 'tim', 'alex');
$lucky_winner = array_rand($users);
echo $lucky_winner;
// alex 

Ruby

users = [ 'john', 'jane', 'tim', 'alex' ];
lucky_winner = users[rand(users.length)];
puts lucky_winner;
# => alex 
25 10, 2009

array_reverse

By | 2009-11-16T14:46:56+00:00 October 25th, 2009|Categories: PHP, Ruby|Tags: , , |Comments Off on array_reverse

The array_reverse() function in PHP reverses the order of the elements in an array.

PHP

$a = array('php', 'ruby', 'java');
$results = array_reverse($a);
print_r($results);
/*
Array (
	[0] => 'java'
	[1] => 'ruby'
	[2] => 'php'
)
*/

To replicate this functionality in Ruby, we can use the reverse method of the Array object.

Ruby

a = [ "php", "ruby", "java" ];
p a.reverse;
# => ["java", "ruby", "php"]
21 10, 2009

array_count_values

By | 2009-11-05T15:56:11+00:00 October 21st, 2009|Categories: PHP, Ruby|Tags: , , |Comments Off on array_count_values

The array_count_values() function in PHP counts the number of instances of each value in an array. array_count_values() returns an associative array using the values of the input array as keys and their frequency in the input as values.

PHP

$a = array('a', 'b','a', 'c', 'c');
$results = array_count_values($a);
print_r($results);
/*
Array (
	[a] => 2
	[b] => 1
	[c] => 2
)
*/

To replicate this functionality in Ruby, we need to use a Hash object, since arrays in Ruby don’t use associative key/value pairs.

Ruby

a = [ "a", "b", "a", "c", "c" ];
result = list.inject({}) do |hash, key|
  hash.include?(key) ? hash[key] += 1 : hash[key] = 1;
  hash
end

p result;
# => ["a" => 2, "b" => 1, "c" => 2]
17 10, 2009

array_chunk

By | 2009-10-30T15:45:53+00:00 October 17th, 2009|Categories: PHP, Ruby|Tags: , , , |2 Comments

The array_chunk() function in PHP splits an array into multiple smaller arrays (array chunks).

PHP

$langs = array('php', 'ruby', 'java', 'perl', 'csharp');
$my_size = 2;
var_dump( array_chunk($langs, $my_size) );

/*
Array (
    [0] => Array
        (
            [0] => php
            [1] => ruby
        )

    [1] => Array
        (
            [0] => java
            [1] => perl
        )

    [2] => Array
        (
            [0] => csharp
        )

) )
*/

Ruby

def array_chunk(full_array, size)
        number_of_chunks = (full_array.length/size.to_f).ceil;
        chunks = (1..number_of_chunks).collect { [] }
            while full_array.any?
              chunks.each do |a_chunk|
                a_chunk << full_array.shift if full_array.any?
              end
            end
        chunks
end

langs = ["php", "ruby", "java", "perl", "csharp"]
my_size = 2
p array_chunk(langs, my_size)

# => [["php", "perl"], ["ruby", "csharp"], ["java"]]

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This Sliding Bar can be switched on or off in theme options, and can take any widget you throw at it or even fill it with your custom HTML Code. Its perfect for grabbing the attention of your viewers. Choose between 1, 2, 3 or 4 columns, set the background color, widget divider color, activate transparency, a top border or fully disable it on desktop and mobile.

This Is A Custom Widget

This Sliding Bar can be switched on or off in theme options, and can take any widget you throw at it or even fill it with your custom HTML Code. Its perfect for grabbing the attention of your viewers. Choose between 1, 2, 3 or 4 columns, set the background color, widget divider color, activate transparency, a top border or fully disable it on desktop and mobile.