Writing into the file in PHP

The code below overwrites existing content in a file:

$handle = fopen($filename, 'w') or die('Cannot open file:  '.$filename);

The code below adds new line to the existing content:

$handle = fopen($filename, 'a') or die('Cannot open file:  '.$filename);

So, the difference is in fopen($filename, 'w') and fopen($filename, 'a')

Auth in Laravel

For logging system in Laravel I can do this: 1. Win logo on keyboard + R. 2. Type cmd. 3. Go to my Laravel's folder (cd + folder name/or cd.. for moving directory up ) 4. php artisan make:auth

Get the title in default language

Sometimes we need variables to stay in a default language, e.g in English. For example, we have a multi-language site but Google Maps accepts country's name only in English. In our php-part:

if (ICL_LANGUAGE_CODE!="en"){
   $original_ID = icl_object_id( $post->ID, 'post', false, 'en' );
   $country = get_the_title( $original_ID );
   
  } else {
       $country = $country_full_name;
  }

And in our HTML-part:

Change categories’ order

Needed the categories to be in certain order - not in alphabetical and not by id. It can be done by some plugin, but here is the way also through code:

 // change order of terms
   	function gto_forced_order($orderby) {

             switch (ICL_LANGUAGE_CODE){
   	      case("de"):
    	         $orderby = "FIELD(t.term_id, 465, 468,524,525,574,575, 600, 601,1240, 775, 777, 778, 841,843, 844)";
    	      break;
   	      case("fr"):
    	         $orderby = "FIELD(t.term_id,183, 184,203,204, 218, 219, 230, 231, 1239, 294, 296, 297, 306, 308,309)";
    	      break;
   	      case("ru"):
    	        $orderby "FIELD(t.term_id,954,955,974,975,989,990,1041,1042,1241,1145,1147,1375,1184,1186,1187)";
    	      break;
              case("es"):
    	         $orderby = "FIELD(t.term_id,834, 935,994,995,1009,1010,1021,1022,1242, 1165,1167,1168,1177,1179,1180 )";
    	       break;
               case("zh-hant"):
    	           $orderby = "FIELD(t.term_id,464, 467,526,527, 569, 570,609, 610,1238,795, 797, 798, 834, 836, 837)";
    	       break;
               case("ar"):
    	         $orderby = "FIELD(t.term_id,466, 469,528,529, 579, 580,591, 592,1243,815, 817, 818, 827, 829, 830)";
    	       break;
               default: 
     	         $orderby = "FIELD(t.term_id,125,95,97,121,33,32,124,99,37,36,96,122,123,94,34)";
     	        break;
              }

 
         return $orderby;
       }
add_filter('get_terms_orderby','gto_forced_order');

//original query
$tax_terms = get_terms( $tax, $tax_args );
gto_forced_order($tax_terms);

Just change the terms' IDs. Source as usual almighty Internet.

Translating WordPress: Your Own Text Domain for WordPress

For translating your theme we need to define our text domain in functions.php:

And where needed we can do like that:

Or as function:

Translations can be managed by WPML String Translations or .po files. More can be read here.

Echoing Advanced Custom Fields Plugin’s Fields

Wordpress's plugin Advanced Custom Fields gives the opportunity to echo out the field:

But sometimes you need it as a variable, then use get_field('your_field_name'):

Check if rgb(a) or hex color is in correct format

function color_format($i){
        
$pattern = "/^rgb/i";
$pattern2 ="/a/i";
 $i = strtolower($i);
//its rgb
if (preg_match($pattern, $i)){
  
      // is ending with ; 
  $no_need = substr( $i, -1 );
      // is ending with ;
    if($no_need==";") {
      $i = substr($i,0,-1);
       
    } 
    // let's split "("
       $needed_piece = explode("(", $i);
  
  //it's rgb
      if (preg_match($pattern2, $i)){
         $needed_color = "rgba(".$needed_piece[1];
      } else {
         $needed_color = "rgb(".$needed_piece[1];
      }
     
       return $needed_color;

} else{
    
   // is ending with ;
    $no_need = substr( $i, -1 );

    if($no_need==";") {
      $i = substr($i,0,-1);
       
    } 
    
    // is starting with #
 $i= ltrim($i, '#');
 if (
          ctype_xdigit($i) &&
          (strlen($i) == 6 || strlen($i) == 3))
           return $needed_color = "#".$i;


  else return false;
    

}

}