PHP Exercises: Concat two given strings. If the given strings have different length remove the characters from the longer string
PHP Basic Algorithm: Exercise-81 with Solution
Write a PHP program to concat two given strings. If the given strings have different length remove the characters from the longer string.
Sample Solution:
PHP Code :
<?php
function test($s1, $s2)
{
if (strlen($s1) < strlen($s2))
{
return $s1 . substr($s2, strlen($s2) - strlen($s1));
}
else if (strlen($s1) > strlen($s2))
{
return substr($s1, strlen($s1) - strlen($s2)) . $s2;
}
else
{
return $s1 . $s2;
}
}
echo test("abc", "abcd") . "\n";
echo test("Python", "Python") . "\n";
echo test("JS", "Python") . "\n";
Sample Output:
abcbcd PythonPython JSon
Flowchart:
PHP Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a PHP program to check whether the first two characters and last two characters of a given string are same.
Next: Write a PHP program to create a new string using 3 copies of the first 2 characters of a given string. If the length of the given string is less than 2 use the whole string.
What is the difficulty level of this exercise?
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PHP: Tips of the Day
How to Sort Multi-dimensional Array by Value?
Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:
Example:
function sortByOrder($a, $b) { return $a['order'] - $b['order']; } usort($myArray, 'sortByOrder');
Starting in PHP 5.3, you can use an anonymous function:
usort($myArray, function($a, $b) { return $a['order'] - $b['order']; });
And finally with PHP 7 you can use the spaceship operator:
usort($myArray, function($a, $b) { return $a['order'] <=> $b['order']; });
To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.
usort($myArray, function($a, $b) { $retval = $a['order'] <=> $b['order']; if ($retval == 0) { $retval = $a['suborder'] <=> $b['suborder']; if ($retval == 0) { $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder']; } } return $retval; });
If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual
Ref : https://bit.ly/3i77vCC
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