使用SimpleXMLElement读取特定的xml数据

Question

I have challenges reading the value of "CMBDESTINOSV" and each of "chk_xxxxx" in the "coberData" using SimpleXMLElement in the below code snippet. The code snippet is from an xml response.

I have tried $xml->coberData->chk_C0000; $xml->riskData->CMBDESTINOSV->option->cd[1]; but nothing was returned. Please help.

<root> 
  <riskData label="Risk details"> 
    <CMBDESTINOSV afectaAlPrecio="true" dataName="CMBDESTINOSV" id="CMBDESTINOSV" name="CMBDESTINOSV" type="5" style="width:120" label="Destination" visible="true" maxlength="2" readOnly="false" obligatorio="true" size="3" newLine="false" etiquetaEncima="false" value="-1">-1
      <option>
        <cd>-1</cd>
        <ds/>
      </option>  
      <option>
        <cd>7</cd>
        <ds>05 - Wordlwide Excluding USA &amp; Canada - Wordlwide Excluding USA &amp; Canada</ds>
      </option>  
      <option>
        <cd>10</cd>
        <ds>08 - WORLDWIDE - ALL COUNTRIES</ds>
      </option> 
    </CMBDESTINOSV>
  </riskData>  
  <coberData label="Coverage details"> 
    <chk_C0000 afectaAlPrecio="true" dataName="chk_C0000" id="chk_C0000" name="chk_C0000" type="6" label="BAGAGES" visible="true" onClick="" maxlength="180" readOnly="false" obligatorio="false" size="180" newLine="false" etiquetaEncima="false" value="0"/>  
    <chk_I0000 afectaAlPrecio="true" dataName="chk_I0000" id="chk_I0000" name="chk_I0000" type="6" label="MEDICAL COMPLEMENTARY SERVICES" visible="true" onClick="" maxlength="180" readOnly="true" obligatorio="true" size="180" newLine="false" etiquetaEncima="false" value="1"/>  
    <chk_F0000 afectaAlPrecio="true" dataName="chk_F0000" id="chk_F0000" name="chk_F0000" type="6" label="PERSONAL ACCIDENTS" visible="true" onClick="" maxlength="180" readOnly="true" obligatorio="true" size="180" newLine="false" etiquetaEncima="false" value="1"/>  
    <chk_D0002 afectaAlPrecio="true" dataName="chk_D0002" id="chk_D0002" name="chk_D0002" type="6" label="TRAVEL DELAY" visible="true" onClick="" maxlength="180" readOnly="true" obligatorio="true" size="180" newLine="false" etiquetaEncima="false" value="1"/>  
    <chk_G0000 afectaAlPrecio="true" dataName="chk_G0000" id="chk_G0000" name="chk_G0000" type="6" label="PERSONAL LIABILITY" visible="true" onClick="" maxlength="180" readOnly="true" obligatorio="true" size="180" newLine="false" etiquetaEncima="false" value="1"/>  
    <chk_B0003 afectaAlPrecio="true" dataName="chk_B0003" id="chk_B0003" name="chk_B0003" type="6" label="PERSONAL ASSISTANCE" visible="true" onClick="" maxlength="180" readOnly="true" obligatorio="true" size="180" newLine="false" etiquetaEncima="false" value="1"/>  
    <chk_CAN afectaAlPrecio="true" dataName="chk_CAN" id="chk_CAN" name="chk_CAN" type="6" label="CANCELLATION" visible="true" onClick="" maxlength="180" readOnly="false" obligatorio="false" size="180" newLine="false" etiquetaEncima="false" value="0"/>  
    <chk_U0030 afectaAlPrecio="true" dataName="chk_U0030" id="chk_U0030" name="chk_U0030" type="6" label="ACCIDENTAL DAMAGE" visible="true" onClick="" maxlength="180" readOnly="true" obligatorio="true" size="180" newLine="false" etiquetaEncima="false" value="1"/> 
  </coberData> 
</root>

Answer 1

Your code worked fine to retrieve the target element, only it prints inner text of the element, which is empty. If you call asXML() instead, it will print the correct element :

echo $xml->coberData->chk_C0000->asXML();

If you meant to access one of the attributes instead, try this way :

echo $xml->coberData->chk_C0000->attributes()->afectaAlPrecio;

<kbd>eval.in demo</kbd>

output :

<chk_C0000 afectaAlPrecio="true" dataName="chk_C0000" id="chk_C0000" name="chk_C0000" type="6" label="BAGAGES" visible="true" onClick="" maxlength="180" readOnly="false" obligatorio="false" size="180" newLine="false" etiquetaEncima="false" value="0"/>

true