How to store mulitple data from a textarea in array-CodePudding

I have a textarea and a submit button and on click of the button I want that all the data seperated by a new line inserted into an array.

Here is the form file

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title></title>
</head>
<body>
<form action="export.php" method="POST">
<textarea name="num1" placeholder="Enter Numbers You Want To See records Of....">
    
</textarea>
<input type="submit" name="sub">
</form>

</body>
</html>

And Here is the PHP file

<?php
include 'connect.php';
$newnum = '';
            $a = array($_POST['num1']);
            foreach($a as $i=>$checknum) {
                $newnum = "'".$checknum."'".',';
            }
            $newnum = rtrim($newnum,',');

            echo "$newnum";
                 ?>

This is what I am expecting: Input - 1111 222 333 444 55 Output - '1111','222','333','444','55'

CodePudding user response：

$a = "1111\n222\n333\n444\n55";

echo $a . PHP_EOL;
/*
1111
222
333
444
55
*/

// explode("\n", $a) ->
//      Explodes input by new line into following array [1111, 222, 333, 444, 55]
// fn($line) => "'$line'" ->
//      anonymous function that takes one input and wraps it between ''
//      Replace with function($line) {return "'$line'";} if using PHP < 7.4
// array_map ->
//      takes a callback function and an array and returns a new array by applying a callback to each item
// implode(',', ...) ->
//      join all elements in new array with a separator ','

$newnum = implode(',', array_map(fn($line) => "'$line'", explode("\n", $a)));

echo $newnum;
/*
'1111','222','333','444','55'
*/

Actually you could just implode them with "','" and add ' to both ends.

$newnum = "'" . implode("','", explode("\n", $a)) . "'";

CodePudding user response：

Try

$newnum = '';
$a = explode("\n", $_POST['num1']);
foreach($a as $i=>$checknum) {
   $newnum. = "'".$checknum."'".',';
}
$newnum = rtrim($newnum,',');

CodePudding user response：

you can use :

$res = array_filter(array_map(function($value){
    return trim($value);
}, explode("\n", $a)));

Even if the person add lot of spaces ou add lot of new lines, the code will work.

Regards

CodePudding user response：

assume input from textarea is:

7
10
55


$textbox_string = '7'.PHP_EOL.'10'.PHP_EOL.'55';

$arr = explode(PHP_EOL, $textbox_string);
$in_nums_query_str = implode(',', $arr);
$in_nums_query_str = str_replace(PHP_EOL, '', $in_nums_query_str);
$in_nums_query_str = str_replace(",", "','", $in_nums_query_str);
$in_nums_query_str = "'" . $in_nums_query_str . "'";

echo $in_nums_query_str;

will echo

'7','10','55'