How to create an array from list in file - php

Question

I have a text file countries.txt with a list of all countries:
1. Australia
2. Austria
3. Belgium
4. US
I want to create an array in country_handler.php like this:
$countries = array(
'1'=>'Australia',
'2'=>'Austria',
'3'=>'Belgium',
'4'=>'US'
);
How to do that?

Answer 1

Better you can use this in a function like below - then just called this function from any where
function getCountryList()
{
return array(
'1'=>'Australia',
'2'=>'Austria',
'3'=>'Belgium',
'4'=>'US'
);
}

Answer 2

$data = file_get_contents('countries.txt');
$countries = explode(PHP_EOL, $data);

Answer 3

$file = file('countries.txt');
$countries = array();
foreach ($file as $line) {
#list ($index, $country) = explode('.', $line);
$countries[trim($index)] = trim($country);
}
print_r($countries);

Answer 4

$lines = file('countries.txt');
$newArr = array();
foreach ($lines as $line) {
$erg = preg_split('/\.\s+/', $line);
$newArr[$erg[0]] = $erg[1];
}
var_dump($newArr);

Answer 5

Luckily (sometimes) regex doesn't include newlines in the ., so you can do this:
$contents = file_get_contents('countries.txt');
preg_match_all('#(\d+)\.\s+(.+)#', $contents, $matches);
print_r($matches);
The regex means:
(\d+) -- a number (save this)
\. -- a literal dot
\s+ -- white space
(.+) -- any character except \n or \r (end-of-line) (save this)
Which results in:
Array
(
[0] => Array
(
[0] => 1. Australia
[1] => 2. Austria
[2] => 3. Belgium
[3] => 4. US
)
[1] => Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
)
[2] => Array
(
[0] => Australia
[1] => Austria
[2] => Belgium
[3] => US
)
)
and I'm sure from [1] and [2] you can make the keyed array you need.
array_combine to the easy rescue:
$countries = array_combine($matches[1], $matches[2]);

Answer 6

Try this:
<?php
$data = file_get_contents('countries.txt');
$countries = explode(PHP_EOL,$data);
$cnt = 1;
foreach($countries as $val) {
if($val <>"") {
$res[$cnt] = strstr(trim($val), ' ');
$cnt++;
}
}
print_r($res);
?>