note 76940 deleted from ref.array by felipe
| From: | felipe@php.net | Date: | Sun, 30 Dec 2007 19:30:11 +0000 |
| Subject: | note 76940 deleted from ref.array by felipe | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-134533@lists.php.net to get a copy of this message | ||
Note Submitter: pedja at uzice dot net
----
Here is the function that cleans array of empty records. It goes recursive through multidimensional
array and erases any item that has empty value or is empty array.
This actually works on any variable type, not just arrays.
<?php
function clean_item ($p_value) {
if (is_array ($p_value)) {
if ( count ($p_value) == 0) {
$p_value = null;
} else {
foreach ($p_value as $m_key => $m_value) {
$p_value[$m_key] = clean_item ($m_value);
if (empty ($p_value[$m_key])) unset ($p_value[$m_key]);
}
}
} else {
if (empty ($p_value)) {
$p_value = null;
}
}
return $p_value;
}
?>
Example:
<?php
$m_array['aaa'] = 'bbb';
$m_array['ccc'] = '';
$m_array['ddd'] = Array();
$m_array['eee']['fff'] = Array();
$m_array['eee']['ggg'] = '';
$m_array['eee']['hhh'] = 'iii';
$m_array['eee']['j']['a'] = 'gh';
$m_array['eee']['j']['b'] = '';
$m_array['eee']['j']['c'] = 'rty';
$m_array['eee']['j']['d'] = Array();
$m_array['eee']['j']['e'][1] = 'r';
$m_array['eee']['j']['e'][2] = 'y';
$m_array['eee']['j']['e'][1] = '';
$m_array['eee']['j']['e'][4] = Array();
$m_array['eee']['j']['e'][5] = '';
$m_clean = $seo->clean_item ($m_array);
print_r ($m_array);
print_r ($m_clean);
?>
Variable $m_clean contains:
Array
(
[aaa] => bbb
[eee] => Array
(
[hhh] => iii
[j] => Array
(
[a] => gh
[c] => rty
[e] => Array
(
[2] => y
)
)
)
)
?>