PHP Errors warnings php

/**
 * function return file content as string
 * $filename is path to file 
 */ 
function getContents($filename) {
	if (function_exists('file_get_contents')) {
		return file_get_contents($filename);
	} else {
		$fp = fopen($filename, 'r');
		if (!$fp) {
			echo ('Could not read contents <br/>');
			return false;
		}

		return fread($fp, filesize($filename)); // return string
	}
}

/**
 * function file return file content as an array of rows
 */ 
$rows = file($filename);

/**
 *  fopen() modes
 */ 
r  Read                    
r+ Read and write, prepend 
w  Write, truncate         
w+ Read and write, truncate
a  Write, append           
a+ Read and write, append  

$country[0] = "cz"                                 
$country[1] = "sk"                                 
$country[2] = "de"                                 
$country[3] = "uk"                                 
$country[4] = "fr"                                 

// this do same 
$country[] =  "cz" 
$country[] =  "sk" 
$country[] =  "de" 
$country[] =  "uk" 
$country[] =  "fr" 

// or
$country = array('cz','sk','de','uk','fr');

// get array items count                         
$length = count($country); 

for($i=0;$i<$length;$i++){
  print $country[$i].'<br>';// cz sk de uk fr
}  

                                                 
// or like this                                  
$country[50] = 'ca';                             
$country[10] = 'fr';                             
$country[20] = 'us'                              
                                                 
// now country will index 51                     
$country[] = 'ru';  

// or 
$country = array('5'=>'cz','sk','de','uk','fr'); 
/*
Array
(
    [5] => cz
    [6] => sk
    [7] => de
    [8] => uk
    [9] => fr
)
*/                            
                                                 
// you can do this                               
$country["cz"] = 1571;                           
$country["sk"] = 1572;                           
$country["de"] = 1573;                           
$country["uk"] = 1574;                           
$country["fr"] = 1575;                           
                                                 
print $country["uk"]; // 1574                           
                                                 
                                                 
// print all items key and value                         
foreach ($country as $key => $value){            
	print $key; // cz, sk, de, uk, fr              
	print $value; // 1571, 1572,  1573, 1574, 1575 
}                                                

//////////////////////////////
function setFirstLetterToUpper($vstup)
{ // BEGIN function 
  if(mb_strlen($vstup)==1){ 
    return mb_strtoupper($vstup);
  }else if(mb_strlen($vstup)>1){ 
    $upper = mb_strtoupper($vstup);
    $vstup = mb_substr($upper, 0, 1).mb_substr($vstup,1,mb_strlen($vstup) - 1); 
    return $vstup;
  }else
  return $vstup;
} // END function

Jak naformátovat číslo například 1000 aby výstup byl 1 000.

How formatting Numbers in javascript

// in us return 1,000.00 in czech cz return 1 000,00
var newNumber = format_Of_Number ('cz', 1000.00); // cz is czech format - us is us format of number 

function format_Of_Number (stat, num) {
  stat = stat.toLowerCase();
	nStr = this + '';
	var x = nStr.split('.');
	var x1 = x[0];
	var x2;
	if(stat=='cz')
	x2 = x.length > 1 ? ',' + x[1] : ''; // nahradime tecku carkou
	else if(stat=='us')
	x2 = x.length > 1 ? '.' + x[1] : ''; // us format
	
	var rgx = /(d+)(d{3})/;
	while (rgx.test(x1)) {
		if(stat=='cz')
		x1 = x1.replace(rgx, '$1' + ' ' + '$2'); // nahradime mezerou cesky format 1 000,00
		else if(stat=='us')
		x1 = x1.replace(rgx, '$1' + ',' + '$2'); // us format 1,000.00
	}
	return x1 + x2;
}

Udaje o prohlížeči

alert(navigator.appName); // Netscape
alert(navigator.appVersion); // 5.0(Windows; en-US)
alert(navigator.appCodeName); // Mozilla
alert(navigator.appMinorVersion); // subverze prohlížeče

alert(navigator.browserLanguage);
alert(navigator.cookieEnabled); // true - false
alert(navigator.cpuClass);  
alert(navigator.onLine);  // true když je připojen k síti
alert(navigator.platform);  
alert(navigator.systemLanguage); 
alert(navigator.userAgent); 
alert(navigator.userLanguage); 

// zjisteni detekce prohlizece Google Chrome
var bool_is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;