How to pass multiple urls from text fields into array - php

Question

I am trying to enter multiple urls from text field as input, into array to extract some data.
Here's my code
<form method="post">
<textarea name="urls[]" cols="150" rows="15" value=""></textarea>
<input type="submit" value="Get URLs" />
</form>
if (isset($_POST['urls']) && !empty($_POST['urls'])) {
// fetch data from specified url
foreach($_POST['urls'] as $key => $value){
$data = array($value);
$r = multiRequest($data);
}
}
foreach ($r as $key => $url){
$res = preg_match_all( "/[a-z0-9]+[_a-z0-9\.-]*[a-z0-9]+#[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})/i",
$url, $matches);
if($res) {
foreach(array_unique($matches[0]) as $email) {
echo $email . "<br />";
}
} else {
echo "No data found.";
}
unset($value);
Now if I enter single url,www.example1.com, if fetches the data (email). But if I enter more than one url in the form, it doesn't works (No data found).
If I define url in array manually
$data = array('www.example1.com', 'www.example2.com', 'www.example3.com');
I can extract the data (email).
How to do it for multiple entries?

Answer 1

If you delimit your urls by a line return, we can split and process them:
<form method="post">
<textarea name="urls" cols="150" rows="15" value=""></textarea>
<input type="submit" />
Omit the square brackets on the input name if we have one textarea. (Alternatively use many text inputs with the name attribute urls[], to get your input into an array.)
<?php
$urls = $_POST['urls'] ?? '';
$urls = preg_split('#\R#', $urls);
$emails = [];
foreach ($urls as $url)
{
$pattern = '/[a-z0-9]+[_a-z0-9\.-]*[a-z0-9]+#[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})/i';
if (preg_match_all($pattern, $url, $matches))
{
foreach(array_unique($matches[0]) as $email) {
$emails[] = $email;
}
}
}
if(empty($emails)) {
echo 'No emails found.';
} else {
print implode('<br>', $emails);
}
The input:
http://example.com
mailto://foo#example.com
Will output:
foo#example.com

Answer 2

You're passing one value in $data array by this syntax $data = array($value);.
Replace $data = array($value);
with
$data = array();
$data[] = $value;
This will append each new value to the &data array.
Example
Also, you have one textarea, it means that the value(text input) of it comes into name=urls[] as a first value of array urls[]. In PHP you'll get one value.
If you want to separate inputted data you need to split it. For example, if you will write inputs comma separated, then you'll need to make explode(",",$_POST["urls"];) at least. By the way, change name="urls[]" to simply name="urls".
Use this code for retrieving inputs comma separated:
<form method="post">
<textarea name="urls" cols="150" rows="15" value=""></textarea>
<input type="submit" value="Get URLs" />
</form>
if (isset($_POST['urls']) && !empty($_POST['urls'])) {
// fetch data from specified url
$inputs = explode(",",$_POST["urls"]);
$data = array();
foreach($inputs as $key => $value){
$data[] = $value;
}
$r = multiRequest($data);
}
As I understood your multiRequest() function should process your $data array, put this line outside the foreach loop. If you won't you will process $data array each loop.
Note: inputs should be comma separated in this case(in textarea).