Creating a string from a Php array and writing it to a text file

Question

I have an array like this:

Array
(
    [0] => firstname1,
    [1] => lastname1,
    [2] => firstname2,
    [3] => lastname2,
    [4] => firstname3,
    [5] => lastname3
)

Now I want to create a text file containing this content:

firstname1|lastname1#firstname2|lastname2#firstname3|lastname3#

How can I do that?

@Fred-ii- I just want to know, how can I create a .txt file using PHP. Just that, I will create a regex of my array later — stack
– stack, Commented Dec 16, 2015 at 23:16
Google'd (for you) "how to create a .txt file with php" - stackoverflow.com/q/9265274 and tizag.com/phpT/filecreate.php and tizag.com/phpT/filewrite.php and stackoverflow.com/q/14998961 amongst many others. — Funk Forty Niner
– Funk Forty Niner, Commented Dec 16, 2015 at 23:19
hah! someone even put in an answer using the links from above, rich! - Had I known, I'd of done the same ;-) but I'm not like that. — Funk Forty Niner
– Funk Forty Niner, Commented Dec 16, 2015 at 23:29

Progrock · Accepted Answer · 2020-03-05 17:54:11Z

1

You can iterate through the array in pairs, contcatenating with your chosen characters, to build a string, and then write it to a file with file_put_contents.

<?php
$names = array(
    'firstname1',
    'lastname1',
    'firstname2',
    'lastname2',
    'firstname3',
    'lastname3'
);

for(
    $i = 0, $n = count($names), $str = '';
    $i < $n;
    $i += 2
)
{
    $str .= $names[$i] . '|' . $names[$i+1] . '#';
}
file_put_contents('/tmp/names.txt', $str);

Or to build the string we could chunk the original array into pairs:

$str = '';
foreach(array_chunk($names, 2) as list($first, $second))
    $str .= $first . '|' . $second . '#';

edited Mar 5, 2020 at 17:54

answered Dec 16, 2015 at 23:33

Progrock

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Comments

Community · Accepted Answer · 2017-05-23 11:44:38Z

1

$array = array(
    'firstname1',
    'lastname1',
    'firstname2',
    'lastname2',
    'firstname3',
    'lastname3'
);
$str = implode('@', $array) . '@';
$str = preg_replace('/(.+?)@(.+?)@/', '$1|$2#', $str);
file_put_contents('/tmp/file.txt', $str);

Edit inspired by: https://stackoverflow.com/a/16687155/3392762, and what came before.

edited May 23, 2017 at 11:44

CommunityBot

11 silver badge

answered Dec 16, 2015 at 23:28

Juakali92

1,1439 silver badges21 bronze badges

9 Comments

Funk Forty Niner Over a year ago

This is about the only answer (so far) that makes any sense.

Juakali92 Over a year ago

it isn't actually right as i didn't read the output correctly which is my fault. I'll edit it shortly

Funk Forty Niner Over a year ago

No problemo. I wasn't criticizing it, do what you can ;-)

stack Over a year ago

@Fred-ii- I have a question of You, you know the answer ... is it not? So why you don't write an answer under my question? really why?

Funk Forty Niner Over a year ago

@stack so I'm the one who gets "shot at", sigh. Double rich.

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