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split

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

Returns a vec containing the string split on the given delimiter

namespace HH\Lib\Str;

function split(
  string $string,
  string $delimiter,
  ?int $limit = NULL,
): vec<string>;

The vec will not contain the delimiter itself.

If the limit is provided, the vec will only contain that many elements, where the last element is the remainder of the string.

To split the string into equally-sized chunks, see Str\chunk(). To use a pattern as delimiter, see Regex\split().

Previously known as explode in PHP.

Guide​

Parameters​

  • string $string
  • string $delimiter
  • ?int $limit = NULL

Returns​

  • vec<string>

Examples​

$str = "This, is, a, great, software, for sure.";
$split_str = Str\split($str, ",");
\print_r($split_str);

$split_str2 = Str\split($str, ",", 3);
\print_r($split_str2);