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What does array map do in php?
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.
How do you create a loop using PHP?
There are a number of different ways to loop using PHP. They're as follows:ForForeachWhileDo-whileBelow are some examples of how each of these types of loop work.ForForeachWhileDo-while
What is the Use of a dollar sign in php?
the dollar sign appears before a variable/array. Essentially it just tells php that its a variable. $food = "cheese pizza"; or $myfavoritenumber = 2 ;
How do you pass a variable by value in php?
In the declaration of the receiving function, you add an ampersand. <?php function myWayCoolFunction( &$params) {.....} $x = array('1','2','3'); myWayCoolFunction($x) ?>
How do you merge arrays in PHP?
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!
How can you create an array of numbers easily in php?
$foo = array(1.41421356, 1.61803399, 2.71828183, 3.14159265);
How do you empty an array in PHP?
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 ?>
How do you find the size of an array in PHP?
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 ?>
How can you mix up the order of values in a PHP 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 ?>
How do you pick a random value from a PHP array?
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 ?>
How do you reverse the results in a PHP array?
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 ?>
How do you separate word in array using php?
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);
What does array map do in php?
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.
How do you count the vowels in a string using PHP?
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
How can you check if a value is already in an array in PHP?
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!"; } ?>
How do you count the number of elements in an array using PHP?
Using the function "count". <?php $foo = array("John", "Jacob", "Jingleheimer", "Schmidt"); echo count($foo); // <-- outputs the number 4 ?>
How do you flip an array without using flip function in PHP?
Use a for-loop starting at the length of the array and go backwards and build up a new array with the values.
How do you install crystal reports for php?
how to create report in php
What is the best way to write an array to a file in PHP?
The serialize() function is used to create a storable representation of a variable in PHP.To store an array to a file, you first use the serialize() function to change an array into a string. Save the string in a file using file I/O, so fwrite() or a similar function. When reading it use unserialize() to get the original array again.
How do you create an area of a webpage to display PHP results?
PHP code blocks start with <?php and end with ?>.
Do any languages have array subscripts beginning with 1?
Yes, PHP and C both do.
How do you create a PHP script?
To create a PHP script all you have to do is create a new file, then save the file as "filename.php". It must have a .php file extension.After that open the file and put in the PHP tags like shown.Then you write your PHP script within those tags and upload to your web space and check it out.
How do you sort variable in ascending or descending order both in php?
Assuming that the values are stored in an array, you can use the php function sort($array) to sort ascending, and rsort to sort descending. The following link gives a table that lists all of the built in PHP sort functions: http://php.net/manual/en/array.sorting.php
How do you create a loop using PHP?
There are a number of different ways to loop using PHP. They're as follows:ForForeachWhileDo-whileBelow are some examples of how each of these types of loop work.ForForeachWhileDo-while
How do you merge and sort an array using PHP?
To merge and sort an array in PHP you need to use the array_merge() and sort() functions like shown in the example below: <?php $array1 = array(1, 5, 3, 9, 7); $array2 = array(8, 2, 6, 4, 0); // merge the arrays $merge = array_merge($array1, $array2); // 1, 5, 3, 9, 7, 8, 2, 6, 4, 0 // sort the array sort($merge); // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ?>
