List Library

IgnitedCMS ships with a variety of useful List, array  helper utilities

Basic setup is explained below, the lst library supports basic FIFO list operations.

$this->load->library('lst');

Function reference

set
Parameters:

array - an array of object to initialise lst class

Returns:

void

Return type:

void

$this->lst->set([1, 2, 3, 4, 'test']);

Function reference

print
Parameters:

none - dumps array as string

Returns:

void

Return type:

void

$this->lst->set([1, 2, 3, 4, 'test'])->print();

(Echo array object to view as associative array)

Function reference

push
Parameters:

String, int, float - push this value to the lst object at the end

Returns:

void

Return type:

void

$this->lst->set([1, 2, 3, 4, 'test'])->push('a')->push(8)->print();

Function reference

pop
Parameters:

none - pops the very last element in the list out of the stack

Returns:

void

Return type:

void

$this->lst->set([1, 2, 3, 4, 'test'])->pop()->print();

(Echos array except with 'test' the last element - removed)

Function reference

contains
Parameters:

string, int, float - checks to see if list object contains variable

Returns:

bool - true or false

Return type:

bool

$tmp = $this->lst->set([1, 2, 3, 4, 'test'])->contains('test');

(Returns true)

Function reference

unique
Parameters:

none - removes all duplicate elements from array

Returns:

void

Return type:

void

$this->lst->set([1, 2, 3, 4, 2, 1)->unique()->print();

(Echos '1,2,3,4' as the other values are duplicates)

Function reference

length
Parameters:

none - returns length of current array object

Returns:

void

Return type:

void

$len = $this->lst->set([1, 2, 3, 4])->length();
echo $len;

(Echos '4' to the view)

Function reference

sort
Parameters:

string $key - sorts assoc array by key value

Returns:

void

Return type:

void

$this->lst->set([]);
$this->lst->push(['name' => 'zoey', 'age' => '2']);
$this->lst->push(['name' => 'amy', 'age' => '18']);

$this->lst->print();

echo br();
echo 'sorted';

$this->lst->sort('name')->print();

Sorts by key in ASCENDING order

Function reference

to_json
Parameters:

none - converts assoc array into valid JSON string

Returns:

void

Return type:

void

$block = $this->lst->set([]);
$block->push(['name' => 'zoey', 'age' => '2']);
$block->push(['name' => 'amy', 'age' => '18']);

echo $block->to_json();

Function reference

for
Parameters:

int $start, int $end, string (odd or even - optional)

Returns:

void

Return type:

void

Special engine function to quickly generate for iterations like 1..20

$block = $this->lst->for(1,10);
print_r($block);

(Echos 1,2,3,4,5,6,7,8,9,10) Note you can pass an optional 'odd' or 'even' flag here
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