How to trim all strings in an array in PHP ?

To trim all strings in an array in PHP, the code is as follows−

Example

 Live Demo

<?php
   $arr = array( " John ", "Jacob ", " Tom ", " Tim ");
   echo "Array with leading and trailing whitespaces...
";
   foreach( $arr as $value ) {
      echo "Value = $value 
";
   }
   $result = array_map('trim', $arr);
   echo "
Updated Array...
";
   foreach( $result as $value ) {
      echo "Value = $value 
";
   }
?>

Output

This will produce the following output−

Array with leading and trailing whitespaces...
Value = John
Value = Jacob
Value = Tom
Value = Tim
Updated Array...
Value = John
Value = Jacob
Value = Tom
Value = Tim

Example

Let us now see another example −

 Live Demo

<?php
   $arr = array( " Kevin ", "Katie ", " Angelina ", " Jack ");
   echo "Array with leading and trailing whitespaces...
";
   foreach( $arr as $value ) {
      echo "Value = $value 
";
   }
   array_walk($arr, create_function('&$val', '$val = trim($val);'));
   echo "
Updated Array...
";
   foreach($arr as $key => $value)
      print($arr[$key] . "
");
?>

Output

This will produce the following output−

Array with leading and trailing whitespaces...
Value = Kevin
Value = Katie
Value = Angelina
Value = Jack
Updated Array...
Kevin
Katie
Angelina
Jack