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    content
   ";$sxe = new SimpleXMLElement($xml);//xml从字符串创建$xml2 = "
   
    
     mybook
    
   ";$sxe2 = simplexml_load_string($xml2);//php字符串格式化输入方式$xml3 = <<< t
       
        
        
    
     xml basic        
     
      what's the html
             
     
      what's the xml
         
        
    
     xml language        
     
      xml elements must have the end signs
             
     
      xml elements must have correct form
         
    
   t;//从字符串创建xml$xml_real = simplexml_load_string($xml3);//输出方式1foreach ($xml_real->chapter as $a){    echo $a->para."
";}echo "
   
";//输出方式2foreach ($xml_real->children() as $a){    echo $a."
";}echo "
   
";//输出方式3foreach ($xml_real->children() as $a){    echo $a->para."
";}echo "
   
";//输出方式4foreach ($xml_real->children(null,true) as $a){    echo $a->para[1]."
";}echo "
   
";//输出方式5echo $xml_real->chapter[0]->para[0]."
";echo $xml_real->chapter[0]->para[1]."
";echo $xml_real->chapter[1]->para[0]."
";echo $xml_real->chapter[1]->para[1]."
";