PHP array remove characters and keep only the numbers - php

Question

looking for the code can remove characters from the array and display numbers only.
array(
1=>123456 hello; / &,
2=>128767 ^% * ! ajsdb,
3=>765678 </ hello echo.,
);
i want to remove the floowing from the array
hello; / &
^% * ! ajsdb
</ hello echo.
and wants to keep as stated
array(
1=>123456,
2=>128767,
3=>765678,
);
Thanks and Kind Regards,

Answer 1

You want to use preg_replace to replace all non-numeric chars with ''
$arr = array(
1 => "1234 perr & *",
2 => "3456 hsdsd 3434"
);
foreach($arr as &$item) {
$item = preg_replace('/\D/', '', $item);
}
var_dump($arr);
results in
array(2) { [1]=> string(4) "1234" [2]=> &string(8) "34563434" }

Answer 2

Make a for statement to get values of your array and try this:
foreach($arr as $value){
$cleansedstring = remove_non_numeric($value);
echo $cleansedstring;
}
function remove_non_numeric($string) {
return preg_replace('/\D/', '', $string)
}

Answer 3

<?php
// Set array
$array = array(
1 => "123456 hello; / &",
2 => "128767 ^% * ! ajsdb",
3 => "765678 </ hello echo.",
);
// Loop through $array
foreach($array as $key => $item){
// Set $array[$key] to value of $item with non-numeric values removed
// (Setting $item will not change $array, so $array[$key] is set instead)
$array[$key] = preg_replace('/[^0-9]+/', '', $item);
}
// Check results
print_r($array);
?>

Answer 4

function number_only($str){
$slength = strlen($str);
$returnVal = null;
for($i=0;$i<$slength;$i++){
if(is_numeric($str[$i])){
$returnVal .=$str[$i];
}
}
return $returnVal;
}

Answer 5

You should use preg_replace using [0-9]+

Answer 6

like this
$values = array(
1=>"123456 hello; / &",
2=>"128767 ^% * ! ajsdb",
3=>"765678 </ hello echo",
);
$number_values = array();
foreach($values as $value) {
$pieces = explode(' ', $value);
$numbers = array_filter($pieces, function($value) {
return is_numeric($value);
});
if(count($numbers) > 0)
{
$number_values[] = current($numbers);
}
}
print_r($number_values);

Answer 7

I would advice you to take a look at the intval method (http://php.net/manual/en/function.intval.php) and the foreach loop (http://php.net/manual/en/control-structures.foreach.php).
With those 2 functions combined you will be able to clear all the elements from the not numeric characters,

Answer 8

Why not array_walk() ? http://php.net/manual/en/function.array-walk.php
$arr = array(
1 => "1234 perr & *",
2 => "3456 hsdsd 3434"
);
array_walk($arr, function(&$item) {
$item = preg_replace('/\D/', '', $item);
});
print_r($arr);
Result:
Array
(
[1] => 1234
[2] => 34563434
)
Check it online:
http://sandbox.onlinephpfunctions.com/code/d63d07e58f9ed6984f96eb0075955c7b36509f81