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<?php

/**
* Form acronyms from a string
* @param string $str
*/

function acronym ($str) 
{

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<?php

/**
* Replaces spaces between string by hyphens
* @param string $str
* @return string
*/

function create_slug ($str)
{

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<?php

/**
* Removes accents from a string
* @param int $str
* @return string
*/

function strip_accents ($str)
{

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<?php

/**
* Generate a random password
* @param int $length
*/

function random_password ($length = 8, $chars = "abcdefghijklmnopqrstuwxyzABCDEFGHIJKLMNOPQRSTUWXYZ0123456789") 
{

guimadaleno

<?php

/**
* Test if URL is valid
* @author SpikeZ
* @param string $str
* @return bool
*/

function is_valid_url ($uri)

guimadaleno

<?php

/**
* Test if date is equal
* @param string $date1
* @param string $date2 (default today timestamp)
* @param string $format (default d/m/Y)
* @return bool
*/

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<?php


/**
* Indent JSON strings
* @param string $str
* @return string json
*/

function indent_json ($str) 

guimadaleno

<?php

/**
* Converts HEX color code to RGB(A)
* @param string $color
* @param int $opacity
* @return string
*/

function hex2rgba ($color, $opacity = false) 

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<?php

/**
* Format bytes to KB, MB, GB...
* @param int $bytes
* @param int $precision
* @return string
*/

function format_bytes ($bytes, $precision = 2) 

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<?php

/**
* Calculate average of array values
* @param array $array
* @return int $average
*/

function array_average ($arr) 
{