preg_split() - Split String into Tokens

PHP Modules Tutorials - Herong's Tutorial Examples

∟PCRE Module - Perl Compatible Regular Expressions

∟preg_split() - Split String into Tokens

This section provides a tutorial example on how to split a string with pattern delimiters using the preg_split() function.

If you want to split a string into tokens with delimiter pattern, you can use the preg_split() function:

$tokens = preg_split($pattern, $subject);

where: 
  $pattern: Regular express pattern as the delimiter
  $subject: String to be split
  $tokens: Subjects that are affected by replacements

Here is an example script that splits a URL into multiple parts:

<?php
# preg-split-string.php
# Copyright 2009-2024 (c) HerongYang.com. All Rights Reserved.

  $subject = "https://herongyang.com/PHP/index.html";
  $pattern = "/(:\/\/)|\//";
  $tokens = preg_split($pattern, $subject);	
  print("Split subject into tokens:\n");
  print("  Subject: $subject\n");
  print("  Pattern: $pattern\n");
  print("  Tokens:\n".json_encode($tokens, JSON_PRETTY_PRINT)."\n");
?>

If you run the above script, you will see the following output:

herong$ php preg-split-string.php 

Subject: https://herongyang.com/PHP/index.html
Pattern: /(:\/\/)|\//
Tokens:
[
    "https",
    "herongyang.com",
    "PHP",
    "index.html"
]