PHP program to split a given comma delimited string into an array of values

To split a given comma delimited string into an array of values, PHP provides several built-in functions like explode() and preg_split(). Both methods effectively convert a comma-separated string into an array.

Using explode() Function

The explode() function is the most straightforward method to split a string by a specific delimiter ?

<?php
$my_string = "456,789,23,4,019";
$my_str_arr = explode(",", $my_string);
print_r("The array is ");
print_r($my_str_arr);
?>

The array is Array
(
    [0] => 456
    [1] => 789
    [2] => 23
    [3] => 4
    [4] => 019
)

Using preg_split() Function

The preg_split() function uses regular expressions for more complex splitting patterns ?

<?php
$my_string = "00, 876, 5432, 1234, 0";
$my_str_arr = preg_split("/,/", $my_string);
print_r("The array is ");
print_r($my_str_arr);
?>

The array is Array
(
    [0] => 00
    [1] =>  876
    [2] =>  5432
    [3] =>  1234
    [4] =>  0
)

Handling Whitespace

To remove extra whitespace around values, combine splitting with array_map() and trim() ?

<?php
$my_string = "apple, banana, cherry, date";
$my_str_arr = array_map('trim', explode(",", $my_string));
print_r($my_str_arr);
?>

Array
(
    [0] => apple
    [1] => banana
    [2] => cherry
    [3] => date
)

Comparison

Conclusion

Use explode() for simple comma-separated strings and preg_split() for complex patterns. Always consider trimming whitespace for cleaner results.