1--TEST-- 2getPreviousSibling() and getNextSibling() 3--EXTENSIONS-- 4tidy 5--FILE-- 6<?php 7 8$tidy = tidy_parse_string(<<<HTML 9<!DOCTYPE html> 10<html> 11 <body> 12 <div>first</div> 13 <!-- second --> 14 <div>third</div> 15 </body> 16</html> 17HTML); 18$body = $tidy->body(); 19 20function format($str) { 21 if (is_null($str)) return $str; 22 return trim($str); 23} 24 25foreach ($body->child as $i => $child) { 26 echo "=== From the perspective of child $i ===\n"; 27 echo "Previous: "; 28 var_dump(format($child->getPreviousSibling()?->value)); 29 echo "Next: "; 30 var_dump(format($child->getNextSibling()?->value)); 31} 32 33echo "=== html element has only the doctype as sibling ===\n"; 34echo "Previous: "; 35var_dump(format($tidy->html()->getPreviousSibling()?->value)); 36echo "Next: "; 37var_dump(format($tidy->html()->getNextSibling()?->value)); 38 39?> 40--EXPECT-- 41=== From the perspective of child 0 === 42Previous: NULL 43Next: string(15) "<!-- second -->" 44=== From the perspective of child 1 === 45Previous: string(16) "<div>first</div>" 46Next: string(16) "<div>third</div>" 47=== From the perspective of child 2 === 48Previous: string(15) "<!-- second -->" 49Next: NULL 50=== html element has only the doctype as sibling === 51Previous: string(15) "<!DOCTYPE html>" 52Next: NULL 53
