CODEWITHSUNDEEP
phpparsingtextarealine
James
James

Reputation: 43647

Get each line from textarea

<textarea> put returns between paragraphs
for linebreak add 2 spaces at end
indent code by 4 spaces
quote by placing > at start of line
</textarea>

$text = value from this textarea;

How to:

1) Get each line from this textarea ($text) and work with them using foreach()?

2) Add <br /> to the end of each line, except the last one?

3) Throw each line to an array.

Important - text inside textarea can be multilanguage.

Have tried to use:

$text = str_replace('\n', '<br />', $text);

But it doesn't work.

Thanks.

Upvotes: 51

Views: 115295

Answers (8)

Jim
Jim

Reputation: 18853

Warning: this answer is focused on the particular part of OP, which is not related to the question title. For the answer to the question "how to get each line", consider the posts below.

You will want to look into the nl2br() function along with the trim().

The nl2br() will insert <br /> before the newline character (\n) and the trim() will remove any ending \n or whitespace characters.

$text = trim($_POST['textareaname']); // remove the last \n or whitespace character
$text = nl2br($text); // insert <br /> before \n

That should do what you want.

UPDATE

The reason the following code will not work is because in order for \n to be recognized, it needs to be inside double quotes since double quotes parse data inside of them, where as single quotes takes it literally, IE "\n"

$text = str_replace('\n', '<br />', $text);

To fix it, it would be:

$text = str_replace("\n", '<br />', $text);

But it is still better to use the builtin nl2br() function, PHP provides.

EDIT

Sorry, I figured the first question was so you could add the linebreaks in, indeed this will change the answer quite a bit, as anytype of explode() will remove the line breaks, but here it is:

$text = trim($_POST['textareaname']);
$textAr = explode("\n", $text);
$textAr = array_filter($textAr, 'trim'); // remove any extra \r characters left behind

foreach ($textAr as $line) {
    // processing here. 
}

If you do it this way, you will need to append the <br /> onto the end of the line before the processing is done on your own, as the explode() function will remove the \n characters.

Added the array_filter() to trim() off any extra \r characters that may have been lingering.

Upvotes: 110

Shah Erhan
Shah Erhan

Reputation: 593

You could use PHP constant:

$array = explode(PHP_EOL, $text);

additional notes:
1. For me this is the easiest and the safest way because it is cross platform compatible (Windows/Linux etc.)
2. It is better to use PHP CONSTANT whenever you can for faster execution

Upvotes: 46

Alexander_F
Alexander_F

Reputation: 2877

For a <br> on each line, use

<textarea wrap="physical"></textarea>

You will get \ns in the value of the textarea. Then, use the nl2br() function to create <br>s, or you can explode() it for <br> or \n.

Hope this helps

Upvotes: 4

profimedica
profimedica

Reputation: 2830

It works for me:

if (isset($_POST['MyTextAreaName'])){
    $array=explode( "\r\n", $_POST['MyTextAreaName'] );

now, my $array will have all the lines I need

    for ($i = 0; $i <= count($array); $i++) 
    {
        echo (trim($array[$i]) . "<br/>");
    }

(make sure to close the if block with another curly brace)

}

Upvotes: 5

Temitope
Temitope

Reputation: 101

Old tread...? Well, someone may bump into this...

Please check out http://telamenta.com/techarticle/php-explode-newlines-and-you

Rather than using:

$values = explode("\n", $value_string);

Use a safer method like:

$values = preg_split('/[\n\r]+/', $value_string);

Upvotes: 10

shamittomar
shamittomar

Reputation: 46692

Use PHP DOM to parse and add <br/> in it. Like this:

$html = '<textarea> put returns between paragraphs
for linebreak add 2 spaces at end
indent code by 4 spaces
quote by placing > at start of line
</textarea>';

//parsing begins here:
$doc = new DOMDocument();
@$doc->loadHTML($html);
$nodes = $doc->getElementsByTagName('textarea');

//get text and add <br/> then remove last <br/>
$lines = $nodes->item(0)->nodeValue;

//split it by newlines
$lines = explode("\n", $lines);

//add <br/> at end of each line
foreach($lines as $line)
    $output .= $line . "<br/>";

//remove last <br/>
$output = rtrim($output, "<br/>");

//display it
var_dump($output);

This outputs:

string ' put returns between paragraphs
<br/>for linebreak add 2 spaces at end
<br/>indent code by 4 spaces
<br/>quote by placing > at start of line
' (length=141)

Upvotes: 5

Vincent Robert
Vincent Robert

Reputation: 36130

$content = $_POST['content_name'];
$lines = explode("\n", $content);

foreach( $lines as $index => $line )
{
    $lines[$index] = $line . '<br/>';
}

// $lines contains your lines

Upvotes: 4

cichy
cichy

Reputation: 10644

$array = explode("\n", $text);
for($i=0; $i < count($array); $i++)
{
    echo $line;
    if($i < count($array)-1)
    {
         echo '<br />';
    }
}

Upvotes: 4

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