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PHP Array Exercises : Get an array of all elements which have the keys that are present in another array

PHP Array: Exercise-49 with Solution

Write a PHP script to get an array containing all the entries of an array which have the keys that are present in another array.

Sample Solution:

PHP Code:

<?php
$first_array = array('c1' => 'Red', 'c2' => 'Green', 'c3' => 'White', 'c4' => 'Black'); 
$second_array = array('c2', 'c4'); 
print_r(array_intersect_key($first_array, array_flip($second_array)));
?>

Sample Output:

Array                                                       
(                                                           
    [c2] => Green                                           
    [c4] => Black                                           
) 

Flowchart:

Flowchart: PHP - Get an array of all elements which have the keys that are present in another array

PHP Code Editor:

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PHP: Tips of the Day

PHP: Where does PHP store the error log? (php5, apache, fastcgi, cpanel)

PHP stores error logs in /var/log/apache2 if PHP is an apache2 module. Shared hosts are often storing log files in your root directory /log subfolder. But...if you have access to a php.ini file you can do this:

error_log = /var/log/php-scripts.log

According to rinogo's comment: If you're using cPanel, the master log file you're probably looking for is stored (by default) at

/usr/local/apache/logs/error_log

If all else fails you can check the location of the log file using

<?php phpinfo(); ?>

Ref : https://bit.ly/2EffgH5

 





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