我在xml_parse（）函数中出现的问题 ATutor QTI Parser
我希望有人可以指出我错过的内容，或者想出一个解决PHP 7.1.1的方法。
我发现没有文档或帖子在这里建议将PHP xml_parse（）函数从5.6更改为7.1，尽管这两个版本似乎以不同方式解析xml。正在解析的XML出现在下面。
具体来说，对于示例中的问题数组，5.6.30返回一系列问题，如：
[question] => Array
(
[0] => graphic matching
[1] => LIKERT
[2] => multi choice question
[3] => Mutliple question
[4] => open ended
[5] => ordering
[6] => Simple match
[7] => true
)
使用php 7.1.1时，其他所有内容都是相同的，它只返回上面每个数组元素的第一个字母，作为字符串。
[question] => gLmMooSt
XML文件是来自QTI测试（即测验）包的IMS QTI 1.2.1清单。
发生截断的元素是问题标题（问题本身），在以下元素中找到，当使用PHP5.6（[0] =＆gt;图形匹配）时，它返回数组中的第一个元素，并在使用PHP7.1.1时在问题字符串中返回第一个字母＆＃34; g＆＃34;（[问题] =＆gt; gLmMooSt）
<material>
<mattext texttype="text/html">graphic matching</mattext>
</material>
<?xml version="1.0" encoding="utf-8"?>
<questestinterop
xmlns="http://www.imsglobal.org/xsd/ims_qtiasiv1p2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.imsglobal.org/xsd/ims_qtiasiv1p2 http://www.imsglobal.org/profile/cc/ccv1p0/derived_schema/domainProfile_4/ims_qtiasiv1p2_localised.xsd"
>
<assessment title="Simple test" ident="d41d8cd98f00b204e9800998ecf8427e">
<section ident="ATUTOR-8" title="Simple test">
<!-- matching question with partial marks -->
<item title="Mathcing question" ident="ITEM_2">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>Logical Groups</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>qmd_questiontype</fieldlabel>
<fieldentry>Drag-and-drop</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_profile</fieldlabel>
<fieldentry>cc.pattern_match.v0p1</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_weighting</fieldlabel>
<fieldentry>5</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">graphic matching</mattext>
</material>
<response_lid ident="RESPONSE-98f13708210194c475687be6106a3b84" rcardinality="Multiple">
<material>
<mattext texttype="text/html">a</mattext>
</material>
<render_choice shuffle="No">
<response_label ident="Option0">
<flow_mat>
<material>
<mattext texttype="text/html">A</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Option1">
<flow_mat>
<material>
<mattext texttype="text/html">B</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
<response_lid ident="RESPONSE-3c59dc048e8850243be8079a5c74d079" rcardinality="Multiple">
<material>
<mattext texttype="text/html">b</mattext>
</material>
<render_choice shuffle="No">
<response_label ident="Option0">
<flow_mat>
<material>
<mattext texttype="text/html">A</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Option1">
<flow_mat>
<material>
<mattext texttype="text/html">B</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
</flow>
</presentation>
<resprocessing>
<outcomes>
<decvar varname="SCORE" />
</outcomes>
</resprocessing>
</item>
<!-- likert question (aka multiple choice with no correct answer) -->
<item title="Multiple choice question" ident="ITEM_1">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>Logical Identifier</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>qmd_questiontype</fieldlabel>
<fieldentry>Multiple-choice</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_profile</fieldlabel>
<fieldentry>cc.mutliple_choice.v0p1</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">LIKERT</mattext>
</material>
<response_lid ident="RESPONSE1" rcardinality="Single">
<render_choice shuffle="No" minnumber="1" maxnumber="1">
<flow_label>
<response_label ident="Choice0">
<material>
<mattext texttype="text/html">A LITTLE</mattext>
</material>
</response_label>
<response_label ident="Choice1">
<material>
<mattext texttype="text/html">A lot</mattext>
</material>
</response_label>
</flow_label>
</render_choice>
</response_lid>
</flow>
</presentation>
<resprocessing>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE1">Choice0</varequal>
</conditionvar>
<setvar varname="que_score" action="Set">0</setvar>
</respcondition>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE1">Choice1</varequal>
</conditionvar>
<setvar varname="que_score" action="Set">0</setvar>
</respcondition>
</resprocessing>
</item>
<!-- single answer multiple choice question -->
<item title="Multiple choice question" ident="ITEM_5">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>Logical Identifier</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>qmd_questiontype</fieldlabel>
<fieldentry>Multiple-choice</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_profile</fieldlabel>
<fieldentry>cc.mutliple_choice.v0p1</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_weighting</fieldlabel>
<fieldentry>5</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">multi choice question</mattext>
</material>
<response_lid ident="RESPONSE5" rcardinality="Single">
<render_choice shuffle="No" minnumber="1" maxnumber="1">
<response_label ident="Choice0">
<flow_mat>
<material>
<mattext texttype="text/html">this is correct</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice1">
<flow_mat>
<material>
<mattext texttype="text/html">this is wrong</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice2">
<flow_mat>
<material>
<mattext texttype="text/html">this is wrong</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
</flow>
</presentation>
<resprocessing>
<outcomes>
<decvar varname="SCORE" />
</outcomes>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE5">Choice0</varequal>
</conditionvar>
<setvar varname="que_score" action="Set">5</setvar>
</respcondition>
</resprocessing>
</item>
<!-- multi answer multiple choice question with partial marks -->
<item title="Multiple answer question" ident="ITEM_4">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>Logical Identifier</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>qmd_questiontype</fieldlabel>
<fieldentry>Multiple-response</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_profile</fieldlabel>
<fieldentry>cc.mutliple_response.v0p1</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_weighting</fieldlabel>
<fieldentry>5</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">Mutliple question</mattext>
</material>
<response_lid ident="RESPONSE4" rcardinality="Multiple">
<render_choice shuffle="No">
<response_label ident="Choice0">
<flow_mat>
<material>
<mattext texttype="text/html">coorect</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice1">
<flow_mat>
<material>
<mattext texttype="text/html">coorect</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice2">
<flow_mat>
<material>
<mattext texttype="text/html">icorrect</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice3">
<flow_mat>
<material>
<mattext texttype="text/html">icorrect</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
</flow>
</presentation>
<resprocessing>
<outcomes>
<decvar varname="SCORE" />
</outcomes>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE4">Choice0</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">5</setvar>
</respcondition>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE4">Choice1</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">5</setvar>
</respcondition>
</resprocessing>
</item>
<!-- open ended (free text) question -->
<item title="Open ended question" ident="ITEM_6">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>String</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>qmd_questiontype</fieldlabel>
<fieldentry>FIB-string</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_profile</fieldlabel>
<fieldentry>cc.fib.v0p1</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_weighting</fieldlabel>
<fieldentry>5</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">open ended</mattext>
</material>
<response_str ident="RESPONSE6" rcardinality="Single">
<render_fib rows="1" columns="5">
<response_label ident="Choice" />
</render_fib>
</response_str>
</flow>
</presentation>
</item>
<!-- ordering question -->
<item title="Ordering question" ident="ITEM_7">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>Logical Identifier</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">ordering</mattext>
</material>
<response_lid ident="RESPONSE7" rcardinality="Ordered">
<render_choice shuffle="Yes" minnumber="4" maxnumber="4">
<response_label ident="Choice0">
<flow_mat>
<material>
<mattext texttype="text/html">item1</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice1">
<flow_mat>
<material>
<mattext texttype="text/html">itms2</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice2">
<flow_mat>
<material>
<mattext texttype="text/html">item 3</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Choice3">
<flow_mat>
<material>
<mattext texttype="text/html">items 4</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
</flow>
</presentation>
<resprocessing>
<outcomes>
<decvar varname="SCORE" />
</outcomes>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE7">Choice0</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">1.25</setvar>
</respcondition>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE7">Choice1</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">1.25</setvar>
</respcondition>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE7">Choice2</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">1.25</setvar>
</respcondition>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE7">Choice3</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">1.25</setvar>
</respcondition>
</resprocessing>
</item>
<!-- matching question with partial marks -->
<item title="Mathcing question" ident="ITEM_3">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>Logical Groups</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>qmd_questiontype</fieldlabel>
<fieldentry>Drag-and-drop</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_profile</fieldlabel>
<fieldentry>cc.pattern_match.v0p1</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_weighting</fieldlabel>
<fieldentry>5</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">Simple match</mattext>
</material>
<response_lid ident="RESPONSE-34173cb38f07f89ddbebc2ac9128303f" rcardinality="Multiple">
<material>
<mattext texttype="text/html">A</mattext>
</material>
<render_choice shuffle="No">
<response_label ident="Option0">
<flow_mat>
<material>
<mattext texttype="text/html">A</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Option1">
<flow_mat>
<material>
<mattext texttype="text/html">B</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
<response_lid ident="RESPONSE-c16a5320fa475530d9583c34fd356ef5" rcardinality="Multiple">
<material>
<mattext texttype="text/html">B</mattext>
</material>
<render_choice shuffle="No">
<response_label ident="Option0">
<flow_mat>
<material>
<mattext texttype="text/html">A</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="Option1">
<flow_mat>
<material>
<mattext texttype="text/html">B</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
</flow>
</presentation>
<resprocessing>
<outcomes>
<decvar varname="SCORE" />
</outcomes>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE-34173cb38f07f89ddbebc2ac9128303f">Option0</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">5</setvar>
</respcondition>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE-c16a5320fa475530d9583c34fd356ef5">Option1</varequal>
</conditionvar>
<setvar varname="Respondus_Correct">5</setvar>
</respcondition>
</resprocessing>
<itemfeedback ident="FEEDBACK">
<solution>
<solutionmaterial>
<flow_mat>
<material>
<mattext texttype="text/html">Optional Feedback</mattext>
</material>
</flow_mat>
</solutionmaterial>
</solution>
</itemfeedback>
</item>
<!-- true or false question (aka multiple choice with two choices) -->
<item title="True or False question" ident="ITEM_8">
<itemmetadata>
<qtimetadata>
<qtimetadatafield>
<fieldlabel>qmd_itemtype</fieldlabel>
<fieldentry>Logical Identifier</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>qmd_questiontype</fieldlabel>
<fieldentry>True/false</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_profile</fieldlabel>
<fieldentry>cc.true_false.v0p1</fieldentry>
</qtimetadatafield>
<qtimetadatafield>
<fieldlabel>cc_weighting</fieldlabel>
<fieldentry>5</fieldentry>
</qtimetadatafield>
</qtimetadata>
</itemmetadata>
<presentation>
<flow>
<material>
<mattext texttype="text/html">true</mattext>
</material>
<response_lid ident="RESPONSE8" rcardinality="Single">
<render_choice shuffle="No">
<response_label ident="ChoiceT">
<flow_mat>
<material>
<mattext texttype="text/html">True</mattext>
</material>
</flow_mat>
</response_label>
<response_label ident="ChoiceF">
<flow_mat>
<material>
<mattext texttype="text/html">False</mattext>
</material>
</flow_mat>
</response_label>
</render_choice>
</response_lid>
</flow>
</presentation>
<resprocessing>
<outcomes>
<decvar varname="SCORE" />
</outcomes>
<respcondition title="CorrectResponse">
<conditionvar>
<varequal respident="RESPONSE8">
ChoiceT </varequal>
</conditionvar>
<setvar varname="que_score" action="Set">5</setvar>
</respcondition>
</resprocessing>
</item> </section>
</assessment>
</questestinterop>
答案 0 :(得分：1)
此问题是由此引起的，用于保存数组的变量$question是作为空字符串启动的。
PHP7有一个非常严格的变量类型验证。在PHP7之前，当一个变量在代码中被视为与它启动的类型不同的类型时，PHP会以静默方式将其转换为新类型。使用PHP7，变量在整个代码中被视为初始化类型，在这种情况下，分配给$question的数组值将被截断，以便仅通过从每个数组值中获取第一个字符来组成字符串。