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Using the Spread Operator to Evaluate Arrays In-Place Tests

My tests using the Spread Operator rather than the apply function. In the 1st function show_max_array i use the apply operator to convert the array into comma seperated values. In the show_max_array..

Using the rest operator to pass in a variable amount of arguments

If you don't know how many parameters you will need in your function you can use the rest operator to pass them in. ...

Default Parameters for Functions

You can pass in default parameters for functions so that if the function is used with no parameter it will use the default one.

Complex Arrow Function Example

Here is an example using a Complex or Higher Order arrow function, which slightly reduces the amount of code lines used. This should return the square root of all positive integers passed into it.

Writing Arrow Functions with Parameters

you can pass parameters to arrow functions as well as shown in the following demo, these functions are only meant to be used once where normal functions can be re-used.

using arrow functions to convert small functions into one line statement functions

in this exercise i will take a function variable and write it in one line using the arrow function

Prevent Object Mutation

This shows how you can lock an object so its content cannot be modified. if you comment out the line Object.freeze(my_object); it will allow it to be modified again.

Changing an array declared with const

a const means that you cannot re-declare the variable name, but you can still mutate an array content that is declared as a const. so you can see in the following example that even though the array is..

return a state name from an australian postcode

this will return an australian state code based on the postcode, so you can enter a valid postcode and see which state it belongs too. e.g: 2000 should return NSW

using let and const example

This example uses let and const rather than just vars, let can only be declaired once rather than overwritten like vars and const is a read only variable so it cant be changed. 

using let rather than var

Using let rather than var and use strict can avoid some overwriting of variables i will write a function here that shows how let throws an error. This function now gives an error in the console. Uncau..

Use Multiple Conditional (Ternary) Operators

I actually find if then statements much easier to read than these ones, but these seem more efficient. 

js - Use the Conditional (Ternary) Operator

this statement can be used instead of if this else that statements. to me it makes it look a bit more complex when reading it. this is the basic syntax. condition ? statement-if-true : statement-if-fa..

Use the parseInt Function with a Radix

This is the same as the parseint function, but you can also specify a base for the number which can be between 2 - 36. 2 is binary. Zeros and Ones. I think base 10 is the normal numbering system, but ..

Using parseInt in a function to return an integer or not

this function uses the parseInt function to return a proper integer or an error code if it can't. So this demo should return NaN for the Not an Int (x1235) and The int for the 00001235. I think that N..

Generate Random Whole Numbers within a Range

My testing for generating a random whole number within a range... 🤞 While the solution here works, it just loops until it gets a random number that is lower than the max, so not sure if this is th..

split a string into an array using split javascript

this will split the string into an array based on the spaces inbetween words. you can split it based on any character, for example if you had words in csv comma format you could use the second example..

get the current url in javascript

this will get the current address add it to a variable and show it on the result element

Custom 12 Grid using CSS Grid

For a while i have been using frameworks for their easy grid systems, like foundation and bootstrap. I guess this is a bit lazy and very bloated as you are loading the full css library and using about..

template for testing and live reloading html files

this is a template that i use while testing flat html files, if you add it to a server it will live reload. this does seem to cause issues depending on the site that is is used on, like reloading all ..

Radial Click Effect

shows the radial click effect like in the material design, so when you click a button it will show a click at that area with a nice animation. Uses CSS and javascript to generate this effect.

Generate Random Whole Numbers with JavaScript Function

generate a random whole number function with test buttons

Generate Random Fractions with JavaScript

generate a random fraction and add it to result when clicking a button

FCC - Basic: Profile Lookup

my solution to the FCC Basic js Profile Lookup, with added results area and button to run the function.

copy a file when the date of the source is newer than the destination

using xcopy and a loop i found this is a good way to make sure that changes in one file make their way across to another location using a windows batch file. this one loops every 5 seconds, i think yo..

Do While Loop

showing how to use a do while loop, i don't use these ones very often usually just a for loop.

get the average of a number list using an array in php

get the average of a array of numbers

get the dimensions of an image with javascript

this will show the height and width of an image using javascript

toggle div function with chevron up down toggle

showing an example of chevron toggles kinda like a manual accordion

form checkbox replacement with large tick using label

this is good if you want to change a form checkbox with the default and show a fancy tick or something else, this will still check the checkbox so will work normally as the form element

apache redirect to https ssl from normal

good if you have apache and access to htaccess file to redirect requests to https version of the site. this one also includes a rewrite to index.php so if you don't need this remove the last line.

IP Address

this uses php $_SERVER['REMOTE_ADDR'] to show your IP address

js function to calculate golf scores

this function will return the score name depending on the par and strokes for golf

compare non equality function

this will check if two values are not equal

compare equality function

this will check if two values are exactly equal

testing equality

showing the difference between == and === operators

PHP Finding the position of a string in another string using strpos

$dot_location = strpos($my_string,".");

PHP str_replace - find and replace part of a string

basic usage for the str_replace php function str_replace ( mixed $search , mixed $replace , mixed $subject)

Random string generator function in php suniqid

Here is a a smaller version of the built in php function uniqid() uses letters and numbers and specify the length of the random string.

Whois Lookup

using the disk free space function in php

here is a built in php function that will show the amount of free space available on your server.

create a mysql or sqlite current timestamp with php

just in case you need to create a CURRENT_TIMESTAMP using php, this formats the current date into the following.

Cut a string when it finds a certain character with PHP

ok so lets say we have a string like this: Hi there im a string. I am also part of the same string. And we want to shorten the above string into just:  Hi there im a string. This is what i wo..

validate a url using php with FILTER_VALIDATE_URL

checks if a url is valid

function to create a uid from html

this function converts a html string into a uid or unique id type string, its not actually unique, but its a string that can be used to make the title of something that contains html into a usable str..

calculate a percentage (dec) difference based on two numbers

this function will show you the percentage difference between two numbers

check if a user is logged in using sessions

PHP MySQL vs SQLite Count Items Function

I have been writing a few functions using sqlite and mysql. There are a couple of slight differences which can be seen in this count items_function.

How Many Days Since a Date and other Calculations

Here i calculate the number of days since a certain date in php and use the values for checking how much something costs per day.  Start Date Lets add the date that the item was purchaced. In d..

Date Conversion PHP

Convert 1/1/2011 into 2011-01-01 00:00:00

Generate a random title from an array

give this an array of strings and it will pick a random one to return from the array.

echo todays date and time in a nice format

This will produce some thing like this: 19 December 2018 @ 10:12

Core - File Structure

Core works on the following directory structure: //class//class/extends//css//db//images//import//inc//lib//pages//templates/ all of the core structure is fairly self explanitory core.class.php can..

Generate Sub menu using Core

page load timer class

usage: $page_timer = new page_timer; // at the start of your code echo $page_timer->end(); // at the end of your code.

human_filesize php

function via here http://php.net/manual/en/function.filesize.php#106569

for loop set variables $p1,$p2.. etc as blank

this will loop through and assign the variable $p1 = ""; to each in the loop

sqlite check table name exists

check that the table name exists in a sqlite database, this function it taken from a class.

get current class name with get_class

This will return the current class name, can be used in side a function of the current class object or give it another object name to return. class myclass {function myfunction() {echo get_class($thi..

assign array to variables in a loop

this will assign all items in the array to variables $p1,$p2.. etc. $p = "/1/2/3/4/5/"; $page_array = explode("/",$p); foreach ($page_array as $key => $value) { if($value > "") { ${"p".$pc..

generate a random color rgb code with php

this code will generate a random color every time its loaded using the rand function in php and generate something like this. .random-color { color:rgb(111,222,111); } PHP Code <?php ..

Regular expression breakdown regex preg_replace php

/ - opening delimiter (necessary for regular expressions, can be any character that doesn't appear in the regular expression \( - Match an opening parenthesis [^)]+ - Match 1 or more character that..

replace anything in brackets in a string using preg_replace regex php

Lets say we have a string like this hi there im a string (not really a string). and we want to remove this bit (not really a string) We can do this using the following regex (preg_replace) $strin..

for loop with a 5 increment

$css_out = "";$max_width = "50";for($i=0; $i<=$max_width; $i = $i + 5) {$css_out .= ".m".$i."{margin:".$i."px;}";}return $css_out;

Get Current Page URL PHP

There is a few methods of getting this but here is a simple one. Replacing the http or https manually.  $current_url = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]"; Here is a more complex ..

Get the document root path in php $_SERVER['DOCUMENT_ROOT']

I ususally use this one if i am linking to files in the server document root folder rather than specifying ../directory/include.file.php i will use something like this:  $document_root = $_..

remove all of an element in a string &lt;h1&gt;

good if you want to remove all of the instances of an element in a string like if you have a <h1> tag in your string and want to remove it you can use the following code. $additional = "some te..

get text between tags

Using DOMDocument you can get strings between tags Useful if you are processing raw html files with php function getTextBetweenTags($string, $tagname){ $d = new DOMDocument(); $d->load..

sqlite basic sql and loop results

basic loop through sql results using sqlite and php $sql = "select $field_name from $db_table_name"; $out = ""; $result = $db->query($sql); if($result) { while($row = $result->fetchA..

convert all images into base64 encoded

if you have a bunch of html with inline image links this will convert them into base64 images inline. <?php $html = "my html string with multiple image tags..."; $dom = new DOMD..

wordpress change domain in config

When moving wordpress sites around the place its usually easiest to change the domain like this. add these to your wp-config.php file define('WP_HOME','http://newsite.com'); define('WP_SITEURL','ht..

read and sort directory contents in php

if you need to read in the contents of a directory in php and sort it by date header('Content-Type: application/json'); $dir = "./html/"; $file_type = ".html"; $out = ""; $files_array[] = ""; ..

uniqid random string

Here is a smaller implimentation of the built in uniqid() function. Good if you want to generate smaller unique strings for url's uniqid example suniqid(5) function suniqid($len = 5) { $..

show response headers from file get contents

this will show the http_response_header when using file get contents, can be useful for seeing what the server is doing. $contents = @file_get_contents($url); echo "<pre>"; var_dump($http_re..

wordpress show the page content for use in a template

if you are using page templates in wordpress and need to show content from wordpress this is the easiest method. This only works for wordpress "pages" not blog "posts". For showing blog posts you will..

file get contents reads entire file into a string

you can use the file_get_contents function to read a file or a web address usage get a url content $homepage = file_get_contents('http://www.example.com/'); echo $homepage; get a file con..

using parse_url to extract parts of a url

Category: PHP the parse_url php function will split a url into an array of url fragments $url = "http://kruxor.com/path/?argument=value#anchor"; var_dump(parse_url($url)); parse_url example ..

basic for loop

I know i always forget this so ill add it here, see if i can remember it. This should count to 10 Out 0 1 2 3 4 5 6 7 8 9 10

try catch test

try and catch example try { //enter code to catch file_get_contents($link); } catch(Exception $ex){ //Process the exception $page_content .= "Unable to process : $link"; }

tell wordpress to use the direct file method if its asking for ftp details

this usually happens if the permissions on the wordpress wp-content folder are not correct or writable. check the permissions are correct: (this is for apache, the user names might be different che..

wordpress enqueue slicknav and slick slider

add this to your theme scripts functions file here is the full one from HTML5 Blank // Load HTML5 Blank scripts (header.php) function html5blank_header_scripts() { if ($GLOBALS['pagenow'] != ..

wordpress include jquery in theme functions

Add this to your themes functions.php file, to include your own version of jquery. if (!is_admin()) add_action("wp_enqueue_scripts", "jquery_enqueue", 11); function jquery_enqueue() { wp_deregi..

copy file

The copy() function copies a file. This function returns TRUE on success and FALSE on failure. echo copy("source.txt","target.txt");

some date formatting just day just month just year

Useful if you need to get PHP to return parts of the date. The date today in number format $date_today = date("d"); e.g: 21 Todays month name $month_name = date("F"); e.g: July ..

header type json

Changes the header to show json type content when the server requests it. header('Content-Type: application/json');

wordpress use a shortcode in php gravity forms

good for using shortcodes in your wordpress templates <?php echo do_shortcode( '[gravityform id=1 title=false description=false ajax=true tabindex=49]' );?>

extract meta tags from url and return as json array

this will download the url and extract its meta tags returning a json encoded string, with json headers. If the url is accessable. <?php header('Content-Type: application/json'); if(!isset($..

csv read example

Not sure if this is the best or correct way of handling CSV file imports, but it worked for me. here is an example of opening a csv and importing the content into a class, you will need to create ..

php get the file modified time with filemtime

Good for reading the modified time of files with php... echo date("F d Y H:i:s.",filemtime("html/php-get-the-file-modified-time-with-filemtime.html")); will output

preg_replace ereg_replace replace all chars

This will replace all characters that are not A-Z a-z 0-9 and - $uid = preg_replace("/[^A-Za-z0-9\-]/", '', $uid);

wordpress check home and not home for banners and things

this quick function will check if the page is home or not good if you want something on the other pages and something just on the home page in the header or that kind of thing. i have tested this i..

wordpress advanced custom fields replace shortcode for site url with blog url

Using advanced custom fields, if you know what the shortcode is and what you want to replace it with you can do so with the following. $site_url = get_site_url(); $field = get_field('template_ht..

using custom request headers array with curl

this function passes in an array with custom request headers to curl, good if you need to pass in some headers to request an api url and give it an auth key or something like that. Also added to the a..

sqlite delete data older than timestamp days

good if you need to delete data older than a certain date, i tested this and it seems to delete data older than 2 days but might have had the time stamp incorrect or something. DELETE FROM $db_tabl..

wordpress get site url

good for using in templates in case the site is moved <?php echo get_site_url(); ?> Usage Example (css) using inline styles in a template file <style> .class { background:url("<?p..

simple html dom extract attributes simplehtmldom

this is if you have an element as follows, and you want to extract attributes from it. <img class="an-image-wow" src="image.jpg" data-image="data-image.jpg" alt="my alt tag"> list all its ..

find the 1st occurence of a string in another string

do a case-sensitive search for a string within another string strpos mixed strpos ( string $haystack , mixed $needle [, int $offset = 0 ] ) usage find the 1st location of a string position within a..

pretty printing json with php

nice if you are working with json string data and just want to be able to read through the structure without copy pasting it somewhere else. $json_string = json_encode($data, JSON_PRETTY_PRINT);

extract meta tags from file or url as array

php has a built in function that can be used to extract the meta tags from a page url into an array. usage just pass it a url, if you call this file meta.php. usage: meta.php?url=http://my-url.co..

wordpress show posts loop with feature image thumbnail

this is surprisingly hard to find code that lists all blog posts in a template with the feature image that does not use an additional plugin. you shouldnt need a plugin to do this as its already built..

random number using rand

Show me a random number between 6 and 12 echo $number = rand(6,12);

search within files in a directory

During my quest to create a semi-static site that is searchable and fast to load. I thought while loading all of this content in with ajax and such that it would be interesting if i could do a text ..

wordpress show the post content for use in a template

if you are looking to show the page content in a template you can find that here. This will show all posts in the selected category <!-- // show the post content --> <?php $my_query ..

show errors in php with toggle

Toggle showing errors in php if your server is configured not to show them, good for testing. If you dont have this enabled it will usually just show a 500 error with no details of where the error o..

wordpress register enqueue javascript require jquery

This usually goes in the theme functions file. This will load it after jquery if it requires it. wp_register_script('scriptname', get_template_directory_uri() . '/js/scripts.js', array('jquery'), ..

count the elements in an array

seems easy, if you need to know the amount of elements in an array this is how you do it. good if you need to know where the end of an array is. code <pre> <?php $array = [ "yo", ..

wordpress get template directory

Get the current theme directory, good for use in wordpress templates. <?php echo get_template_directory_uri(); ?> Usage Example To link to an image located in the theme directory <..

check the server method post or get using php

Here is a basic usage method for checking if the server is in post or get mode. most normal pages are served in get mode. You can send data back to a page using get by adding variables to the string ..