Inverse of array implode() in php [duplicate] - php

Question

I need to split my string input into an array at the commas.
Is there a way to explode a comma-separated string into a flat, indexed array?
Input:
9,admin#example.com,8
Output:
['9', 'admin#example', '8']

Answer 1

Try explode:
$myString = "9,admin#example.com,8";
$myArray = explode(',', $myString);
print_r($myArray);
Output :
Array
(
[0] => 9
[1] => admin#example.com
[2] => 8
)

Answer 2

$string = '9,admin#google.com,8';
$array = explode(',', $string);
For more complicated situations, you may need to use preg_split.

Answer 3

If that string comes from a csv file, I would use fgetcsv() (or str_getcsv() if you have PHP V5.3). That will allow you to parse quoted values correctly. If it is not a csv, explode() should be the best choice.

Answer 4

What if you want your parts to contain commas? Well, quote them. And then what about the quotes? Well, double them up. In other words:
part1,"part2,with a comma and a quote "" in it",part3
PHP provides the https://php.net/str_getcsv function to parse a string as if it were a line in a CSV file which can be used with the above line instead of explode:
print_r(str_getcsv('part1,"part2,with a comma and a quote "" in it",part3'));
Array
(
[0] => part1
[1] => part2,with a comma and a quote " in it
[2] => part3
)

Answer 5

explode has some very big problems in real life usage:
count(explode(',', null)); // 1 !!
explode(',', null); // [""] not an empty array, but an array with one empty string!
explode(',', ""); // [""]
explode(',', "1,"); // ["1",""] ending commas are also unsupported, kinda like IE8
this is why i prefer preg_split
preg_split('#,#', $string, NULL, PREG_SPLIT_NO_EMPTY)
the entire boilerplate:
/** #brief wrapper for explode
* #param string|int|array $val string will explode. '' return []. int return string in array (1 returns ['1']). array return itself. for other types - see $as_is
* #param bool $as_is false (default): bool/null return []. true: bool/null return itself.
* #param string $delimiter default ','
* #return array|mixed
*/
public static function explode($val, $as_is = false, $delimiter = ',')
{
// using preg_split (instead of explode) because it is the best way to handle ending comma and avoid empty string converted to ['']
return (is_string($val) || is_int($val)) ?
preg_split('#' . preg_quote($delimiter, '#') . '#', $val, NULL, PREG_SPLIT_NO_EMPTY)
:
($as_is ? $val : (is_array($val) ? $val : []));
}

Answer 6

Use explode() or preg_split() function to split the string in php with given delimiter
// Use preg_split() function
$string = "123,456,78,000";
$str_arr = preg_split ("/\,/", $string);
print_r($str_arr);
// use of explode
$string = "123,46,78,000";
$str_arr = explode (",", $string);
print_r($str_arr);

Answer 7

If anyone wants to convert comma seprated string into a list item using for-each then it will help you ...
This code is for blade template
#php
$data = $post->tags;
$sep_tag= explode(',', $data);
#endphp
#foreach ($sep_tag as $tag)
<li class="collection-item">{{ $tag}}</li>
#endforeach

Answer 8

//Re-usable function
function stringToArray($stringSeperatedCommas)
{
return collect(explode(',', $stringSeperatedCommas))->map(function ($string) {
return trim($string) != null ? trim($string) : null;
})->filter(function ($string) {
return trim($string) != null;
});
}
//Usage
$array = stringToArray('abcd, , dsdsd, dsds');
print($array);
//Result
{ "abcd", "dsdsd", "dsds" }