PHP Exercises: Compute the digit number of sum of two given integers
PHP: Exercise-47 with Solution
Write a PHP program to compute the digit number of sum of two given integers.
Input:
Each test case consists of two non-negative integers x and y which are separated by a space in a line.
0 ≤ x, y ≤ 1,000,000
Pictorial Presentation:

Sample Solution: -
PHP Code:
<?php
while(true) {
$inputs = explode(' ', trim(fgets(STDIN)));
if (!is_array($inputs) || count($inputs) < 2) {
exit;
}
$a = $inputs[0];
$b = $inputs[1];
$d = numDigits($a + $b);
echo("Digit number of sum of two given integers: ");
echo $d . "\n";
}
function numDigits($n) {
return (int)(log10($n) + 1);
}
?>
Sample Output:
Digit number of sum of two given integers: 2
Flowchart:

PHP Code Editor:
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Previous: Write a PHP program to find heights of the top three building in descending order from eight given buildings.
Next: Write a PHP program to check whether three given lengths (integers) of three sides form a right triangle. Print "Yes" if the given sides form a right triangle otherwise print "No".
What is the difficulty level of this exercise?
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PHP: Tips of the Day
PHP: Correct file permissions for WordPress
When you setup WP you (the webserver) may need write access to the files. So the access rights may need to be loose.
chown www-data:www-data -R * # Let Apache be owner find . -type d -exec chmod 755 {} \; # Change directory permissions rwxr-xr-x find . -type f -exec chmod 644 {} \; # Change file permissions rw-r--r-
After the setup you should tighten the access rights, according to Hardening WordPress all files except for wp-content should be writable by your user account only. wp-content must be writable by www-data too.
chown <username>:<username> -R * # Let your useraccount be owner chown www-data:www-data wp-content # Let apache be owner of wp-content
Maybe you want to change the contents in wp-content later on. In this case you could
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Ref : https://bit.ly/3hcrTkL
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