Php array filter
From w3cyberlearnings
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PHP function array_filter
This function uses the user-defined function to filter array value, each array value passes to the user-defined function and return only true.
Syntax array_filter
- array: uses the array value with the call back function.
- callback: user define function uses to check the array.
array_filter(array, callback);
Example 1
<?php
function by20($val) {
if ($val % 20 == 0) {
return true;
}
}
$score = array(10, 34, 32, 30, 32, 30, 41, 40, 20, 30, 22);
$score20 = array_filter($score, "by20");
foreach ($score20 as $tw => $score) {
echo "{$score} is divided by 20.<br/>";
}
?>
Output
40 is divided by 20. 20 is divided by 20.
Example 2
<?php
function biggerthan20($val) {
if ($val > 20) {
return true;
}
}
$score = array(10, 34, 32, 30, 32, 30, 41, 40, 20, 30, 22);
$score_bigger_20 = array_filter($score, "biggerthan20");
foreach ($score_bigger_20 as $k => $v) {
echo "{$v} is larger than 20.<br/>";
}
?>
Output
34 is larger than 20. 32 is larger than 20. 30 is larger than 20. 32 is larger than 20. 30 is larger than 20. 41 is larger than 20. 40 is larger than 20. 30 is larger than 20. 22 is larger than 20.
Related Links
- array_change_key_case
- array_chunk
- array_combine
- array_count_values
- array_diff_assoc
- array_diff_key
- array_diff_uassoc
- array_diff_ukey
- array_diff
- array_fill_keys
- array_fill
- array_filter
- array_flip
- array_intersect_assoc
- array_intersect_key
- array_intersect_uassoc
- array_intersect_ukey
- array_intersect
- array_key_ exists
- array_keys
