PHP redirect 301 example code

Funkce JavaScript pro práci s datumem a časem.

function msToTime(duration) {
  var milliseconds = parseInt((duration % 1000) / 100),
    seconds = Math.floor((duration / 1000) % 60),
    minutes = Math.floor((duration / (1000 * 60)) % 60),
    hours = Math.floor((duration / (1000 * 60 * 60)) % 24);

  hours = (hours < 10) ? "0" + hours : hours;
  minutes = (minutes < 10) ? "0" + minutes : minutes;
  seconds = (seconds < 10) ? "0" + seconds : seconds;

  return hours + ":" + minutes + ":" + seconds + "." + milliseconds;
}
// console.log(msToTime(300000))
// output: 00:05:00.0

// get time difference between two dates in seconds 
var startDate = new Date();
// Do your operations
var endDate   = new Date();
var seconds = (endDate.getTime() - startDate.getTime()) / 1000;
var milliseconds = (endDate.getTime() - startDate.getTime());

[, OPTIONAL second param [, OPTIONAL ... param]]
static Date.now() // returns the number of milliseconds elapsed since January 1, 1970 00:00:00 UTC.
parse(dateVal) //  Date.parse('05 Dec 1998 00:12:00 GMT'); // return 912816720000
toDateString() // sunday 19.7.2020
toTimeString() // 20:15:37
getDate() // 1-31
getDay() // 0-6, 0 == Sunday
var now = new Date();
var dayOfWeekSundayIs7 = now.getDay() == 0)?7:now.getDay();
getFullYear() // 2020
getHours() // 0-23
getMilliseconds() // eg. 956
getMinutes() //  0-59
getMonth() // 0 january 
getSeconds() // 0-59
getTime() // https://en.wikipedia.org/wiki/Unix_time
getTimezoneOffset() //returns the time zone difference, in minutes, from current locale 
getYear() //does not return full years ("year 2000 problem"), it is no longer used and has been replaced by the getFullYear() method.
setDate(numDate) // 1-31 day of month
setHours(numHours[, numMin[, numSec[, numMilli]]]) // now.setHours(20, 21, 22); 20:21:22
setMilliseconds(numMilli) // 0-999
setMinutes(numMinutes[, numSeconds[, numMilli]]) // 0-59, 0-59, 0-999
setMonth(numMonth[, dateVal]) // 0-11
setSeconds(numSeconds[, numMilli]) 0-59 [, 0-999]
setYear(numYear) // not set full years ("year 2000 problem"), it is no longer used and has been replaced by the setFullYear() method.
setUTCDate() // 
setUTCFullYear(2020) // 2020 sets the full year for a specified date according to universal time GMT
setUTCHours()
setUTCMilliseconds()
setUTCMinutes()
setUTCMonth()
setUTCSeconds()

toLocaleTimeString()
var options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
now.toLocaleDateString(undefined, options); //neděle 19. července 2020

// PDT Pacific Daylight Time (UTC -7)
// GMT ... SET GMT TIME +- ZONE ... new Date('December 31, 1974 23:59:30 GMT-3:00');
toGMTString() // DEPRECATED!!!! use toUTCString()
// Using UTC instead GMT!!!
var d = new Date("2020-07-15T00:00:00.000+07:00"); // UTC + 7
console.log(d.toISOString());  // "2020-07-14T17:00:00.000Z"
console.log(d.valueOf());      // 1594746000000

toISOString() // "2020-07-14T17:00:00.000Z"
toJSON() // "2020-07-14T17:00:00.000Z"
toSource() //This feature is obsolete!!!! Dont use!!!!
toString() // "Tue Jul 14 2020 19:00:00 GMT+0200 (Středoevropský letní čas)"
toUTCString() // "Tue, 14 Jul 2020 17:00:00 GMT"
valueOf() // 1594746000000

Odkazy na online regex editory:

https://regex101.com/


https://www.debuggex.com/r/LyIpMYTAhJ9Gja4x

// IF variable is not defined (or has a falsey value) THEN set it to an empty object.
// ELSE do nothing (technically speaking, variable gets assigned to itself)
var variable = variable  ||  {} ;

function test(){
   console.log(1);
}
// when called
test(); // 1
// or
var a = test;
a(); // 1

// or autocall if code executed
var test2 = function(){
  console.log(2);
}
// test2 is undefined because the function test2 has no return value

// return string
function stringTest(param) {
    return 'Hello ' + ' ' + param;
}

console.log(stringTest("Alice"));  // Hello Alice

// return number
function numberTest(param) {
    return 6 + param;
}

console.log(numberTest(5));  // 11

// or autocall if code executed 
// function is like other variables
// parenthesis is for made groups or call functions.
// Immediately-Invoked Function Expression,
// or IIFE for short. It executes immediately after it’s created.
(function(){
  // all your code here
  var foo = function() {};
  window.onload = foo;
  // ...
})();

// foo is unreachable here (it’s undefined)

//////////////////////////////
// IIFE Immediately Invoked Funtion Expression
var greeting = function(name) {
    return 'Hello ' + ' ' + name;
}('John');

console.log(greeting);  // Hello John
console.log(typeof greeting);  // string
console.log(greeting('Suzan'));  // Uncaught TypeError: greeting is not a function


///////////////////////
var val = (function(){
     var a = 0;  // in the scope of this function
     return function(x){
         a += x;
         return a;
     };
})();

alert(val(10)); //10
alert(val(11)); //21

///////////////////////
// create the structure

var testHash = {
   a : 1,
   b : function(){
      console.log(4);
   },
   c: function(param){
	   var num = param +5;
	   return num;
   }
}
console.log(testHash.a); // 1
testHash.b(); // 4
testHash['b'](); // 4
testHash.c(7); // 12

/////////////////////////
// or function like class
function TestClass(n) {
    this.some_property = n;
    this.some_method = function() {
       console.log(this.some_property);
    };
}

var foo = new TestClass(3);
var bar = new TestClass(4);
foo.some_method(); // 3
bar.some_property += 2;
bar.some_method(); // 6
// console.log(some_property); // Uncaught ReferenceError: some_property is not defined

//////////////////////////
function Car(brand, year) {
	return {
		brand: brand,
		year: year
	}
}
var honda = Car("Honda", 1999); 
console.log(honda.brand); // Honda
console.log(honda.year);  // 1999 

honda.brand = "Honda new Generation";
honda.year = 2021; 
console.log(honda.brand); // Honda new Generation
console.log(honda.year); // 2021

var mazda = Car("Mazda",1987);
console.log(honda.brand); // Honda new Generation
console.log(mazda.brand); // Mazda

//////////////////////////////////////
// simplified code 

 var TEST_CLASS = TEST_CLASS || {};

TEST_CLASS.pokus = TEST_CLASS.pokus || (function() {
    // -------------------------------------------------------------------------
    // Private static variables and methods
    // -------------------------------------------------------------------------
    
    var privateStaticNumber = 5;
    var privateStaticString = "My privateStaticString: ";
    var privateStaticArray = [];

	function privateStaticMethod(){
		console.log('privateStaticMethod');
	}

	// CONSTRUCTOR CTOR
	return function(config) {
		 // ----- private variables -----

        var me = this,
        isPaused = false;
		this.privateStaticNumber = config.firstParam;
		this.privateStaticString = privateStaticString + config.secondParam; // += produce: undefined I am from secondParam
		this.privateStaticArray = config.thirtParam;
			
		// ----- private methods -----
        function getMode (mode, speed) {
			// document.getElementById(mode).addEventListener('click', function () { snakeSpeed = speed; });
		}
		
		// ----- public variables -----
        me.correct = 0;
        me.wrong = 0;
		
		// ----- public methods -----
        
        me.setString = function(val) {
            this.privateStaticString = val;
        };
        me.getString = function() {
            return this.privateStaticString;
        };
		me.publicMethod = function(param){
			console.log(param + ' from me.publicMethod()');
		};

	
	}; // end CTOR
})();
// end TEST_CLASS.pokus

var _me = _me || {};
var _me_test = new TEST_CLASS.pokus({firstParam:8, secondParam:" I am from secondParam", thirtParam:[1,3,9]});
// TEST_CLASS.pokus.privateStaticMethod(); // is not a function
// TEST_CLASS.pokus.publicMethod("Hola!"); // TEST_CLASS.pokus.publicMethod is not a function
// TEST_CLASS.publicMethod("Hola hej!"); // TEST_CLASS.publicMethod is not a function
 
// TEST_CLASS.pokus.publicMethod(" Hello!"); // is not a function
_me_test.publicMethod(" Hello!"); //  Hello! from me.publicMethod()
console.log( _me_test.getString()); // My privateStaticString:  I am from secondParam
console.log( _me_test.isPaused); // undefined
 

Date: 04.11.2020 - 23:14

int to char, char to int, string to int php example source code.

Jak konvertovat číslo na znak a znak na číslo v php:

Ke konverzi čísla na znak slouží v php funkce chr() viz příklad:

for($i=65;$i<91;$i++){

print chr($i); // print upercase of alphabet A - Z

}

Ke konverzi znaku na číslo slouží v php funkce ord()

print ord("A"); // 65

Konverze pomocí přetypování string na int, nebo na float v php:

$int = (int)"bla123a";
print $int; // 0

$int = (int)"123bla";
print $int; // 123

$int = (int)"12.3bla";
print $int; // 12

$float = (float)"3.14pi";
print $float; // 3.14

is_numeric example source code

if (is_numeric (5974)) echo "is numeric";
else echo "no numeric";

Is number odd or even - je cislo liche nebo sude php example

if((11 % 2)==0) echo "number is even";
else echo "number is odd";

Pro psaní příspěvků můžeme vkládat další vlastní tlačítka, která vkládají tagy v hranatých závorkách
Podrobně o této tématice na odkaze níže.
//www.phpbb.com/kb/article/adding-custom-bbcodes-in-phpbb3/


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