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  1. <?php
  2.  
  3. $a = array('one', 'two', 'three', 'four');
  4.  
  5. $pairs = array();
  6. $prev = null;
  7. foreach($a as $word) {
  8. 	if ($prev === null) {
  9. 		$prev = $word;
  10. 	} else {
  11. 		$pairs[] = "$prev $word";
  12. 		$prev = $word;
  13. 	}
  14. }
  15.  
  16. print_r($pairs);
Success #stdin #stdout 0.01s 20568KB
comments (?)
stdin
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Standard input is empty
stdout
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Array
(
    [0] => one two
    [1] => two three
    [2] => three four
)
https://ideone.com/8dqAkz
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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