PHP Array Exercises : Find unique values from multidimensional array and flatten them in zero depth
PHP Array: Exercise-42 with Solution
Write a PHP function to find unique values from multidimensional arrays and flatten them in 0 depth.
Sample Solution:
PHP Code:
<?php
function array_flat($my_array)
{
$fa = array();
$l = 0;
foreach($my_array as $k => $v )
{
if( !is_array( $v ) )
{
$fa[ ]= $v;
continue;
}
$l++;
$fa= array_flat( $v, $fa, $l );
$l--;
}
if( $l == 0 ) $fa = array_values( array_unique( $fa ) );
return $fa;
}
$tmp = array( 'a' => array( -1,-2, 0, 2, 3 ), 'b' => array( 'c' => array( -1, 0, 2, 0, 3 ) ) );
print_r(array_flat($tmp));
?>
Sample Output:
Array ( [0] => -1 [1] => 0 [2] => 2 [3] => 3 )
Flowchart:

PHP Code Editor:
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Previous: Write a PHP program to identify the email addresses which are not unique.
Next: Write a PHP script to merge two commas separated lists with unique value only.
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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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