How to use trim with array_map in PHP

Question

I am trying to remove two characters from the end of each line (if they exist) in an array map.

These characters do not always exist

So I am trying to convert

Array ( [0] => C7130A-B [1] => RB2-8120 [2] => RM1-1082-000B [3] => 0950-4768B [4] => C7130B )

to

Array ( [0] => C7130A [1] => RB2-8120 [2] => RM1-1082-000 [3] => 0950-4768 [4] => C7130 )

Basically I am trying to Eliminate B or -B from the end, I have found a way to do this on a string but cannot on an array.

I have tried many options I have found here on Stack and have sadly had no luck.

function cleanit($s) {
    return rtrim($s, "B");
}

$words = strtoupper($words);
$toBeFound = explode(PHP_EOL, $words);
$war = array_map('cleanit', $toBeFound);
echo('Begin<br>');
print_r($war); 
echo('<br>End');

So far the best result I have had is to remove the B (or -B) from the last item in the array. Which is the result of this code.

Array ( [0] => C7130A-B [1] => C7130B [2] => RM1-1082-000B [3] => 0950-4768B [4] => C7130 )

score 0 · Answer 1 · edited Oct 25 '19 at 12:00

0

Here is documentation that provides what you needed.

Code sample:

function cleanit($s) {
  // return rtrim($s, "B");
  $b = strrpos($s,"B");
  $-b = strrpos($s,"-B");

  if($-b > -1) return str_replace($s,"-B");
  if($b > -1) return str_replace($s,"B");
  return $s;
}

edited Oct 25 '19 at 12:00

Arend

3,741
2
27
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answered Sep 12 '19 at 01:54

cristopher evangelista

55
6

This solution here is returning an empty array for me. – Jesse Sep 12 '19 at 05:21

score 0 · Answer 2 · answered Oct 25 '19 at 12:23

You can use regex with preg_replace like this ($ for remove only on the end of string) :

$myArray = array('C7130A-B', 'RB2-8120', 'RM1-1082-000B', '0950-4768B', 'C7130B');
function cleanit($val)
{
    return preg_replace('/(-B|B)$/','',$val);
}
$resultArray = array_map('cleanit', $myArray);
print_r($resultArray);

Array ( [0] => C7130A [1] => RB2-8120 [2] => RM1-1082-000 [3] => 0950-4768 [4] => C7130 )

How to use trim with array_map in PHP

2 Answers2