Php array map
From w3cyberlearnings
Contents |
PHP function array_map
This function creates a new array by calling each array value and sends to the function to check. The function will modify each array value and return.
Syntax array_map
- callback: user-defined function uses to manipulate the array value
- array: array to be manipulated by the callback function.
array_map(callback,array);
Example 1
<?php
$name = array('cambodia',
'vietnam',
'thailand',
'lao',
'malaysia',
'indonesia',
'singapore'
);
$aa_name = array_map('ucfirst', $name);
foreach ($aa_name as $n) {
echo $n . '<br/>';
}
?>
Output
Cambodia Vietnam Thailand Lao Malaysia Indonesia Singapore
Example 2
<?php
function add_code($va) {
$code = array(
'cambodia' => 855,
'vietnam' => 845,
'thailand' => 392,
'lao' => 322,
'malaysia' => 311,
'indonesia' => 344,
'singapore' => 773
);
return "{$va}:{$code[$va]}";
}
$name = array('cambodia',
'vietnam',
'thailand',
'lao',
'malaysia',
'indonesia',
'singapore'
);
$aa_name = array_map('add_code', $name);
foreach ($aa_name as $n) {
echo $n . '<br/>';
}
?>
Output
cambodia:855 vietnam:845 thailand:392 lao:322 malaysia:311 indonesia:344 singapore:773
Example 3
<?php
function add_score($val) {
if ($val > 32) {
return ($val + 20);
} else {
return ($val - 5);
}
}
$score = array(
'john' => 31,
'bob' => 30,
'mark' => 32
);
$score_list = array_map("add_score", $score);
foreach ($score_list as $name => $new_score) {
echo "{$name} new score is {$new_score}.<br/>";
}
?>
Output
john new score is 26. bob new score is 25. mark new score is 27.
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
