In the last example you are simply fetching the first result row and are looping over it. The foreach () loop work specifically with arrays. The call to fetch will return false, since you have already exhausted the result set (see above), so you get an error trying to loop over false. Here all results are being output by the first loop. Once you've completed that loop, you need to reset the cursor on the database side before you can loop over it again. That's because the data is being streamed from the database and iterating over the result with foreach is essentially shorthand for: while ($row = $users->fetch()). The iterable expression could be an array, or an Iterable. The first iteration outputs all results, the second does nothing since you can only iterate over the result once. PHP foreach looping statement executes a block of statements once for each of the element in the iterable (or iterable expression). Here $users is a PDOStatement object over which you can iterate. This iterates through all records of an array, no matter how many there are. Warning: Invalid argument supplied for foreach()īut when I delete the first "foreach" from the above codes, the output will become normal: " 0:12 The most common type of loop statement in PHP is a foreach statement. In each case, the basic form of the alternate syntax is to change the opening brace to a colon (:) and the closing brace to endif, endwhile, endfor, endforeach, or endswitch, respectively. $result = $users->fetch(PDO::FETCH_ASSOC) By using the ampersand operator (&), the foreach statement works with a reference to the array element. PHP offers an alternative syntax for some of its control structures namely, if, while, for, foreach, and switch. Running "foreach" twice is not my purpose, I'm just curious why TWO "foreach" statements only output the result once? This closure should type-hint the type of object that it is responsible for rendering.Print $row. To accomplish this, you should invoke Blade's stringable method. In these cases, Blade allows you to register a custom echo handler for that particular type of object. However, sometimes you may not have control over the _toString method of a given class, such as when the class that you are interacting with belongs to a third-party library. The _toString method is one of PHP's built-in "magic methods". If you attempt to "echo" an object using Blade, the object's _toString method will be invoked. In PHP there are four types of loops in general, while, do while, for and foreach. Returning to PHP after a fair few years off, just for a personal project. The cached Blade views may be removed using the view:clear Artisan command. If the array element has a numeric key, it will always be included in the rendered class list:Īfter updating the logic of a Blade directive, you will need to delete all of the cached Blade views. The directive accepts an array of classes where the array key contains the class or classes you wish to add, while the value is a boolean expression. The directive conditionally compiles a CSS class string. arms sale to Hungary as punishment for the country’s refusal to approve NATO. When in a nested loop, the parent's loop variable. Risch, the top Republican on the Foreign Relations Committee, is halting a 735 million U.S. A court on Friday unsealed the federal indictment against Donald Trump and an aide over classified documents found at his Mar-a-Lago home and the men’s alleged efforts to keep the. Whether this is an odd iteration through the loop. Whether this is an even iteration through the loop. Whether this is the last iteration through the loop. Whether this is the first iteration through the loop. The total number of items in the array being iterated. The current loop iteration (starts at 1). The index of the current loop iteration (starts at 0). Of course, as mentioned in the documentation on views, data may be passed to the Blade view using the view helper's second $loop variable also contains a variety of other useful properties: Property blade.php file extension and are typically stored in the resources/views directory.īlade views may be returned from routes or controllers using the global view helper. In fact, all Blade templates are compiled into plain PHP code and cached until they are modified, meaning Blade adds essentially zero overhead to your application. Unlike some PHP templating engines, Blade does not restrict you from using plain PHP code in your templates. Blade is the simple, yet powerful templating engine that is included with Laravel.
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