PHP Array Exercises : Filter array elements with certain key-names
PHP Array: Exercise-51 with Solution
Write a PHP program to filter out some array elements with certain key-names.
<?php $first_array = array('c1' => 'Red', 'c2' => 'Green', 'c3' => 'White', 'c4' => 'Black'); $second_array = array('c2', 'c4'); $result = array_diff_key( $first_array, array_flip( $second_array)); print_r($result); ?>
Array ( [c1] => Red [c3] => White )
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Previous: Write a PHP script to get the last value of an array without affecting the pointer.
Next: Write a PHP function to filter a multi-dimensional array. The function will return those items that will match with the specified value.
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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
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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