PHP code example of jstewmc / interval

1. Go to this page and download the library: Download jstewmc/interval library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

jstewmc / interval example snippets


use Jstewmc\Interval;

// create an interval between 2 (exclusive) and 4 (inclusive)
$interval = new Interval('(2, 4]');

// compare values
$interval->compare(1);  // returns -1
$interval->compare(2);  // returns -1
$interval->compare(3);  // returns 0
$interval->compare(4);  // returns 0
$interval->compare(5);  // returns 1

// echo the interval
echo $interval;  // returns "(2, 4]"


use Jstewmc\Interval;

$a = new Interval('(2, 4]');

$b = (new Interval())
    ->setLowerExclusive()
    ->setLower(2)
    ->setUpper(4)
    ->setUpperInclusive();

$a == $b;  // returns true


use Jstewmc\Interval;

new Interval('[0; 0]');      // throws exception (semicolon syntax not supported)
new Interval(']0, 2]');      // throws exception (reverse brackets not supported)
new Interval('[foo, bar]');  // throws exception (use numbers or INF)
new Interval('[0, 0)');      // throws exception (same endpoint, different boundary)
new Interval('[1, -1]');     // throws exception (upper- is less than lower-bound)


use Jstewmc\Interval;

$a = new Interval('(-INF, 0]');

$b = (new Interval())
    ->setLowerExclusive()
    ->setLower(-INF)
    ->setUpper(0)
    ->setUpperInclusive(true);

$a == $b;  // returns true


use Jstewmc\Interval;

$interval = new Interval('(2, 4]');

$interval->compare(1);  // returns -1
$interval->compare(2);  // returns -1
$interval->compare(3);  // returns 0
$interval->compare(4);  // returns 0
$interval->compare(5);  // returns 1


use Jstewmc\Interval;

$interval = new Interval('(2, 4]');

$interval->getIsLowerInclusive();  // returns false
$interval->getLower();             // returns 2
$interval->getUpper();             // returns 4
$interval->getIsUpperInclusive();  // returns true


use Jstewmc\Interval;

$interval = new Interval('(2, 4]');

$interval->isLowerInclusive();  // returns false
$interval->isLowerExclusive();  // returns true
$interval->isUpperInclusive();  // returns true
$interval->isUpperExclusive();  // returns false

echo $interval->setLowerInclusive();  // prints "[2, 4]"
echo $interval->setLowerExclusive();  // prints "(2, 4]"
echo $interval->setUpperInclusive();  // prints "(2, 4]"
echo $interval->setUpperExclusive();  // prints "(2, 4)"