To reverse the results in a PHP array is really simple, all you need to do is use the array_reverse() function like shown below:
<?php
$my_array = array(1, 2, 3);
$reverse_me = array_reverse($my_array); // will be stored as 3, 2, 1 now
?>
To pick random results from an array in PHP you will need to use the array_rand() function, you can select the amount of results you wish it too select too. <?php $array = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10); $rand_results = array_rand($array, 3); // will select 3 random results from the array and store in a new array ?>
To shuffle an array in PHP is easy to do, all you need to use is the shuffle() function like shown below: <?php $array = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10); shuffle($array); // array results will be randomly shuffled ?>
To empty an array in PHP you need to use the unset function like shown below: <?php $array = array('hello', 'hi', 'weee'); unset($array); // empty ?>
To find out how many results there are in a PHP array all you need to do is use the function count() like I have shown you in the example below.
To merge arrays in PHP all you have to do is use the array_merge() function like shown below: <?php $array1 = array("Matt", "Michael", "Justin"); $array2 = array("Janice", "Janet", "Kylie"); $array3 = array_merge($array1, $array2); ?> One thing to remember when merging arrays is you might be creating duplicate results, if you don't want 2 or more of the same result in the array remember to use the function array_unique() to remove the duplicate results from it!
To find the size of an array in PHP you can either use the count() function or the sizeof() function as they will produce the same result. <?php $array = array(1, 2, 3, 4, 5, 6, 7); echo count($array); // outputs 7 echo sizeof($array); // outputs 7 ?>
One way to pass information from search pages to results pages in PHP is to use query parameters in the URL. You can append the search query as a parameter in the URL of the results page, and then retrieve this parameter using PHP's $_GET superglobal array to display the relevant results. Another common method is to use sessions to store the search query information and access it on the results page.
$foo = array(1.41421356, 1.61803399, 2.71828183, 3.14159265);
To separate a sentence into an array of words, you can use PHP's explode() function. If $text is your sentence, then use the following: $result = explode(" ", $text);
The array_map function in PHP loops over each elements of the passed array(s), and runs the given function. It then returns a new array that contains the values returned by each call to the given function.
build an array of vowels then do a foreach on the array and then explode the string on the array value and the answer is -1 of the result
To check if a value is already in an array you will need to use the in_array function like shown below! <?php $values = array("pizza","hello","cheese","fred"); $newvalue = "hello"; if (in_array($newvalue, $values)) { echo "$newvalue is already in the array!"; } ?>