CODEWITHSUNDEEP
phparraysfile
vallez
vallez

Reputation: 117

Remove whitespace from beginning of each array element

I have text file like below(note the whitespaces at the start):

  aaaaaaaaaa
  abbbbbbbbbbb bbbbbbbbbb
 ccccccccccccc ccccccccccc cccccccccc
ddddddddddd ddd dddddd ddddd
eeeeeeeeeee

How can I remove all whitespaces from beginning of each line?

Expected output:

aaaaaaaaaa
abbbbbbbbbbb bbbbbbbbbb
ccccccccccccc ccccccccccc cccccccccc
ddddddddddd ddd dddddd ddddd
eeeeeeeeeee

I tried to use ltrim(), but it doesn't seem to work:

$liness = file('file.txt');
$lines = ltrim($liness);

file_put_contents('file.txt', implode($lines));
echo $lines;

Upvotes: 1

Views: 1688

Answers (4)

Naveed Ahmed
Naveed Ahmed

Reputation: 166

You need to read file line by line to trim.

<?php
$file = fopen('yourfile', "r");
$new_file="";
if($file){
    while (($line = fgets($file)) !== false) { // read file one line at a time.
        $newfile .= ltrim($line); // trim it! trim it! :)
    }
    fclose($file);
    echo $newfile; // !Adios
} else die('Unable to redy the file. :(');

Here is a fiddle for you

Other way to read the file in dom and use Reg-ex to fine " .." find multiple space and replace with only one.

Upvotes: 0

Muhammed
Muhammed

Reputation: 1612

Read file into array, trim each arrays element and put together into a string, put that string back into file:

$lines = file('file.txt')
$lines = array_map('ltrim', $lines);
$str = implode($lines);
file_put_contents('file.txt',$str);
//echo nl2br($str) - to see your new file string
//print_r($lines) - to see file lines as array

Use PHPs trim functions.

trim(' a d  d d ');
//result: 'a d  d d', beginning and ending whitespaces removed

There is also ltrim(), and rtrim() functions to remove left and right spaces only.

Upvotes: 1

fusion3k
fusion3k

Reputation: 11689

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";

Upvotes: 3

devpro
devpro

Reputation: 16117

You just need to use trim():

$lines = trim($liness);

From PHP Manual:

trim — Strip whitespace (or other characters) from the beginning and end of a string

Upvotes: 0

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