How to Trim White Spaces of Array Values in PHP

How to trim white spaces of array values in php

array_map and trim can do the job

$trimmed_array = array_map('trim', $fruit);
print_r($trimmed_array);

Remove white space in the array elements with trim not works

trim() only removes whitespace from the beginning and the end. You probably want

array_map(function($a){ 
    return str_replace(' ', '', $a); 
}, $myarray);

Remove whitespace from beginning of each array element

Ok to ltrim(), but use it with array_map():

$lines = array_map( 'ltrim', $liness );
file_put_contents( 'file.txt', implode($lines) );

And, don't use echo for an array, use print_r() instead. Or:

foreach( $lines as $line ) echo "$line\n";

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• Read more about array_map()

Remove spaces from array values

Simply use array_map, array_filter and explode like as

$string = '1, 2,3,';
print_r(array_map('trim',array_filter(explode(',',$string))));

Output:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
)

Explanation:

Firstly I've split string into an array using explode function of PHP

print_r(explode(',',$string));

which results into

Array
(
    [0] => 1
    [1] =>  2
    [2] => 3
    [3] => 
)

So we need to remove those null values using array_filter like as

print_r(array_filter(explode(',',$string)));

which results into

Array
(
    [0] => 1
    [1] =>  2
    [2] => 3
)

Now the final part need to remove that (extra space) from the values using array_map along with trim

print_r(array_map('trim',array_filter(explode(',',$string))));

SO finally we have achieved the part what we're seeking for i.e.

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
)

Demo

How to remove white space in array values in PHP

Below loop may be helpful for us.

 foreach($array as &$val){
          $data[] = str_replace(' ','',$val);
         }

Thanks

How to remove array elements that are containing only white spaces?

You could just couple it with array_map using trim:

$arr = array_filter(array_map('trim', $arr));

This doesn't reindex the keys though, if you want you could just use array_values:

$arr = array_values(array_filter(array_map('trim', $arr)));

PHP fails to remove white spaces from a arrays

If you are expecting characters and numbers you can use this(keeping * in the string):

preg_replace("/[^a-zA-Z0-9\*]/", "", $td->nodeValue);// this will remove spaces from a proper string also.

or

$data[$row][] = preg_replace("/[^ \w\*]+/", "", $td->nodeValue);// this works better and does not remove spaces

How can I trim all strings in an Array?

array_map() is what you need:

$result = array_map('trim', $source_array);

How to trim the whitespace from an array in PHP

You are not modifying the original array when you do the trim. You should get the values by reference in the foreach loop.

foreach($csv as &$row){
    foreach($row as &$cell){
        $cell = trim($cell);
    }
}

From the documentation:

In order to be able to directly modify array elements within the loop
precede $value with &. In that case the value will be assigned by
reference.

How can I remove the last empty space from my string inside array?

You're missing to assign the result of rtrim ($str, "\n");. So your variable $str is not changed.

$str = rtrim($str, "\n");

Or, by default, to remove all whitespace characters (" \t\n\r\0\x0B"):

$str = rtrim($str);

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