php global trim $_post - php

Question

Could you trim all $_POST vars? because i have a very long list right now for trim each var. looks very unprofessional. i thought trim($_POST); would maybe work but it didnt :]

Answer 1

you can do this with array_map:
$_POST = array_map('trim', $_POST);

Answer 2

Works with multi-dimensional arrays
array_walk_recursive($_POST, function (&$val)
{
$val = trim($val);
});

Answer 3

foreach($_POST as &$p) $p = trim($p);

Answer 4

Quick and simple:
foreach($_POST as $key => $val)
{
$_POST[$key] = trim($val);
}

Answer 5

The simplest, and cleanest (in my opinion), is to use the built in array_map function:
array_map('trim', $_POST);
You can also apply a method of your own by passing an array as the first callback-parameter like so:
array_map(array('My_Class', 'staticMethod'), $_POST); // Invoke a static method
array_map(array($myObject, 'objectMethod'), $_POST);
// Invoke $myObject->objectMethod for each element of $_POST
Update based on a comment below
Sometimes the $_POST array may contain arrays. If you want to trim contents of those arrays as well, there are many custom implementations of array_map_recursive available in the PHP manual user notes. Go there and choose one for yourself. If you don't like to take a custom implementation, array_walk_recursive is also a good option for you.

Answer 6

You can do this with array_walk().

Answer 7

Using recursive function you can do that.
PHP
// Static $_POST Array.
$_POST['1']='one ';
$_POST['2']=' two';
$_POST['3'][]=' three ';
$_POST['4'][][]=' four';
$_POST['5'][0][1][3]='five ';
// Recursive function for trim data.
function trim_recursive($array){
$return = array();
foreach($array as $key=>$values){
if(is_array($values)===true){
$return[$key] = trim_recursive($values);
}
else{
$return[$key] = trim($values);
}
}
return $return;
}
// Usage.
$_POST = trim_recursive($_POST);
Output
// Output before trim.
array(5) {
[1]=>
string(4) "one "
[2]=>
string(4) " two"
[3]=>
array(1) {
[0]=>
string(9) " three "
}
[4]=>
array(1) {
[0]=>
array(1) {
[0]=>
string(5) " four"
}
}
[5]=>
array(1) {
[0]=>
array(1) {
[1]=>
array(1) {
[3]=>
string(5) "five "
}
}
}
}
// Output after trim.
array(5) {
[1]=>
string(3) "one"
[2]=>
string(3) "two"
[3]=>
array(1) {
[0]=>
string(5) "three"
}
[4]=>
array(1) {
[0]=>
array(1) {
[0]=>
string(4) "four"
}
}
[5]=>
array(1) {
[0]=>
array(1) {
[1]=>
array(1) {
[3]=>
string(4) "five"
}
}
}
}