117 lines
3.3 KiB
PHP
117 lines
3.3 KiB
PHP
<?php
|
|
|
|
namespace yiiaddon\helpers;
|
|
|
|
/**
|
|
* @category PHP
|
|
* @package adeattwood\yii-helpers
|
|
* @author Ade Attwood <attwood16@googlemail.com>
|
|
* @copyright 2017 adeattwood.co.uk
|
|
* @license BSD-2-Clause http://adeattwood.co.uk/license.html
|
|
* @link adeattwood.co.uk
|
|
* @since v0.1
|
|
*/
|
|
class Enum extends \yii\base\Object
|
|
{
|
|
const TYPE_ARRAY = 'array';
|
|
const TYPE_NULL = 'null';
|
|
const TYPE_BOOL = 'boolean';
|
|
const TYPE_FLOAT = 'float';
|
|
const TYPE_INT = 'integer';
|
|
const TYPE_DATETIME = 'datetime';
|
|
const TYPE_STRING = 'string';
|
|
const TYPE_RESOURCE = 'resource';
|
|
const TYPE_UNKNOWN = 'unknown';
|
|
|
|
/**
|
|
*
|
|
* Parses and returns a variable type
|
|
*
|
|
* Example:
|
|
*
|
|
* ~~~php
|
|
* $data = [
|
|
* 'id' => 1,
|
|
* 'name' => 'Smith',
|
|
* 'date' => '2014/01/22',
|
|
* 'amount' => '4,323.23',
|
|
* 'relations' => ['spouse', 'children']
|
|
* ];
|
|
* foreach ($data as $k=>$v) {
|
|
* echo "<b>$k</b>: " . Enum::getType($v) . "<br>";
|
|
* }
|
|
* ~~~
|
|
*
|
|
* @param string $var the variable to be parsed
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function getType( $var )
|
|
{
|
|
switch( $var ) {
|
|
case is_null( $var ):
|
|
return self::TYPE_NULL;
|
|
case is_array( $var ):
|
|
return self::TYPE_ARRAY;
|
|
case is_bool( $var ):
|
|
return self::TYPE_BOOL;
|
|
case is_float( $var ):
|
|
case is_numeric( str_replace( ',', '', $var ) ) && strpos( $var, '.' ) > 0 && is_float( ( float )str_replace( ',', '', $var ) ):
|
|
return self::TYPE_FLOAT;
|
|
case is_int( $var ) || ( is_numeric( $var ) && is_int( ( int )$var ) ):
|
|
return self::TYPE_INT;
|
|
case is_scalar( $var ) && strtotime( $var ) !== false:
|
|
return self::TYPE_DATETIME;
|
|
case is_scalar( $var ):
|
|
return self::TYPE_STRING;
|
|
default:
|
|
return self::TYPE_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if a variable is empty or not set.
|
|
*
|
|
* Example:
|
|
*
|
|
* ~~~php
|
|
* if (Enum::isEmpty([]) {
|
|
* echo 'Not empty';
|
|
* }
|
|
* ~~~
|
|
*
|
|
* @param mixed $var variable to perform the check
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public static function isEmpty( $var )
|
|
{
|
|
return !isset( $var ) ? true : ( is_array( $var ) ? empty( $var ) : ( $var === null || $var === '' ) );
|
|
}
|
|
|
|
/**
|
|
* Format and convert "bytes" to its optimal higher metric unit.
|
|
*
|
|
* Example:
|
|
*
|
|
* ~~~php
|
|
* echo Enum::formatBytes(120.32); // returns: 1.17 KB
|
|
* echo Enum::formatBytes(28434322.25); // returns: 27.12 MB
|
|
* echo Enum::formatBytes(17328347842.25, 3); // returns: 16.138 GB
|
|
* ~~~
|
|
*
|
|
* @param double $bytes number of bytes
|
|
* @param integer $precision the number of decimal places to round off
|
|
*
|
|
* @return string
|
|
*/
|
|
public static function formatBytes( $bytes, $precision = 2 )
|
|
{
|
|
$units = [ 'B', 'KB', 'MB', 'GB', 'TB' ];
|
|
$bytes = max( $bytes, 0 );
|
|
$pow = floor( ( $bytes ? log( $bytes ) : 0 ) / log( 1024 ) );
|
|
$pow = min( $pow, count( $units ) - 1 );
|
|
$bytes /= pow( 1024, $pow );
|
|
return round( $bytes, $precision ) . ' ' . $units[$pow];
|
|
}
|
|
}
|