1--TEST-- 2DOMXPath Tests 3--EXTENSIONS-- 4dom 5--FILE-- 6<?php 7require_once("dom_test.inc"); 8 9function MyAverage($nodelist) { 10 $count = 0; 11 $val = 0; 12 foreach ($nodelist AS $node) { 13 $count++; 14 $val += $node->textContent; 15 } 16 if ($val > 0) { 17 return $val/$count; 18 } else { 19 return 0; 20 } 21} 22 23$dom = new DOMDocument; 24$dom->loadXML('<root xmlns="urn::default"><child>myval</child></root>'); 25 26$xpath = new DOMXPath($dom); 27 28$xpath->registerPHPFunctions('MyAverage'); 29$xpath->registerNamespace("php", "http://php.net/xpath"); 30 31$xpath->registerNamespace("def", "urn::default"); 32$nodelist = $xpath->query("//def:child"); 33if ($node = $nodelist->item(0)) { 34 print $node->textContent."\n"; 35} 36 37$count = $xpath->evaluate("count(//def:child)"); 38 39var_dump($count); 40 41$xpathdoc = $xpath->document; 42 43var_dump($xpathdoc instanceof DOMDocument); 44 45$root = $dom->documentElement; 46$root->appendChild($dom->createElementNS("urn::default", "testnode", 3)); 47$root->appendChild($dom->createElementNS("urn::default", "testnode", 4)); 48$root->appendChild($dom->createElementNS("urn::default", "testnode", 4)); 49$root->appendChild($dom->createElementNS("urn::default", "testnode", 5)); 50 51$avg = $xpath->evaluate('number(php:function("MyAverage", //def:testnode))'); 52var_dump($avg); 53 54try { 55 $xpath->registerPHPFunctions('non_existent'); 56 $avg = $xpath->evaluate('number(php:function("non_existent", //def:testnode))'); 57} catch (\Error $e) { 58 echo $e->getMessage() . \PHP_EOL; 59} 60try { 61 $xpath->registerPhpFunctions(['non_existant']); 62 $avg = $xpath->evaluate('number(php:function("non_existent", //def:testnode))'); 63} catch (\Error $e) { 64 echo $e->getMessage() . \PHP_EOL; 65} 66?> 67--EXPECT-- 68myval 69float(1) 70bool(true) 71float(4) 72DOMXPath::registerPhpFunctions(): Argument #1 ($restrict) must be a callable, function "non_existent" not found or invalid function name 73DOMXPath::registerPhpFunctions(): Argument #1 ($restrict) must be an array with valid callbacks as values, function "non_existant" not found or invalid function name 74
