PHP Exercises: Create a function that returns true for all elements of an array, false otherwise
PHP: Exercise-78 with Solution
Write a PHP program to create a function that returns true for all elements of an array, false otherwise.
Sample Solution: -
PHP Code:
<?php
function test_all($items, $my_func)
{
if (count(array_filter($items, $my_func)) === count($items))
return 1;
else
return 0;
}
echo test_all([2, 3, 4, 5], function ($item) {return $item > 0;});
echo "\n";
echo test_all([-2, -3, -4, -5], function ($item) {return $item > 0;});
echo "\n";
echo test_all([-2, 3, 4, -5], function ($item) {return $item > 0;});
?>
Sample Output:
1 0 0
Flowchart:

PHP Code Editor:
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Previous: Write a PHP program which reads a list of pairs of a word and a page number, and prints the word and a list of the corresponding page numbers.
Next: Write a PHP program to deep flatten an given array.
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PHP: Tips of the Day
Returns all elements in an array except for the first one
Example:
<?php function tips_tail($items) { return count($items) > 1 ? array_slice($items, 1) : $items; } print_r(tips_tail([1, 5, 7])); ?>
Output:
Array ( [0] => 5 [1] => 7 )
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