<?php

class Utils

{

	public static function NewGuid(){

		if (function_exists('com_create_guid')){

			return com_create_guid();

		}else{

			mt_srand((double)microtime()*10000);//optional for php 4.2.0 and up.

			$charid = strtoupper(md5(uniqid(rand(), true)));

			$hyphen = chr(45);// "-"

			$uuid = chr(123)// "{"

				.substr($charid, 0, 8).$hyphen

				.substr($charid, 8, 4).$hyphen

				.substr($charid,12, 4).$hyphen

				.substr($charid,16, 4).$hyphen

				.substr($charid,20,12)

				.chr(125);// "}"

			return $uuid;

		}

	}

	

	public static function WriteTemporaryFile($data = null)

	{

		$name = tempnam(sys_get_temp_dir(), '');

		if($data !=null){

			file_put_contents($name,$data);

		}

		return $name;

	}

	

	public static function FormatToIso8601Date($time=false) {

		if(!$time) $time=time();

		return date("Y-m-d", $time) . 'T' . date("H:i:s", $time) .'.000000Z';

	}

	

	public static function ReplaceInFile($template,$hash,$destination = null)

	{

		$content = file_get_contents($template);

		

		foreach ($hash as $key => $value){

			$content = str_replace($key,$value,$content);

		}

		

		if($destination!=null){

			file_put_contents($destination,$content);

		}

		

		return $content;

	}

}



function is_assoc_array($array) 

{

    if(!is_array($array))return false;

    return (bool)count(array_filter(array_keys($array), 'is_string'));

}



// Where,What

function starts_with($haystack, $needle)

{

    return !strncmp($haystack, $needle, strlen($needle));

}



// What,Where

function contains($needle, $haystack)

{

	if($needle==null) return false;

	if($haystack==null) return false;

	if(strlen($needle)>strlen($haystack))return false;

    return strpos($haystack, $needle) !== false;

}



// Where,What

function ends_with($haystack, $needle)

{

    $length = strlen($needle);

    if ($length == 0) {

        return true;

    }



    return (substr($haystack, -$length) === $needle);

}



// Where,What

function indexOf($mystring, $findme)

{

    $pos = strpos($mystring, $findme);

	if ($pos === false) {

		return -1;

	} else {

		return $pos;

	}

}



function randomNumber($length) {

    $result = '';



    for($i = 0; $i < $length; $i++) {

        $result .= mt_rand(0, 9);

    }



    return $result;

}



function return_var_dump(){//works like var_dump, but returns a string instead of printing it.

	$args=func_get_args(); //for <5.3.0 support ...

	ob_start();

	call_user_func_array('var_dump',$args);

	return ob_get_clean();

};



function array_insert(&$array,$element,$position=null) {

  if (count($array) == 0) {

    $array[] = $element;

  }

  elseif (is_numeric($position) && $position < 0) {

    if((count($array)+position) < 0) {

      $array = array_insert($array,$element,0);

    }

    else {

      $array[count($array)+$position] = $element;

    }

  }

  elseif (is_numeric($position) && isset($array[$position])) {

    $part1 = array_slice($array,0,$position,true);

    $part2 = array_slice($array,$position,null,true);

    $array = array_merge($part1,array($position=>$element),$part2);

    foreach($array as $key=>$item) {

      if (is_null($item)) {

        unset($array[$key]);

      }

    }

  }

  elseif (is_null($position)) {

    $array[] = $element;

  }  

  elseif (!isset($array[$position])) {

    $array[$position] = $element;

  }

  $array = array_merge($array);

  return $array;

}



?>