Example of using SimpleXML to check XML file structure in PHP, simplexmlxml

Example of using SimpleXML to check XML file structure in PHP, simplexmlxml_PHP tutorial

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Release： 2016-07-13 10:10:02

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Example of using SimpleXML to check XML file structure in PHP, simplexmlxml

Use SimpleXML to check whether the XML structure meets the specifications. In order to make this program multi-purpose, a benchmark file is used as the structural criterion, and based on the nodes and attributes defined in it, check whether the file meets the basic required format.

Copy code The code is as follows:

/**Check XML file structure
* @param string $baseFilePath base structure file
* @param string $checkFilePath file to be checked
* @return bool Pass true when the structure matches the benchmark file, otherwise false
**/
function checkXmlFileStructure($baseFilePath,$checkFilePath){
/*Open Base File*/
If(!file_exists($baseFilePath)){ return false; }
$base = simplexml_load_file($baseFilePath);
If($base===false){ return false; }

/*Open Check File*/
If(!file_exists($checkFilePath)){ return false; }
$check = simplexml_load_file($checkFilePath);
If($check===false){ return false; }

/*The name of the comparison starting point*/
If($base->getName() != $check->getName()){ return false; }

/*Comparison structure*/
Return checkXmlStructure($base,$check);
}

/**Check XML structure
* @param SimpleXMLElement $base base structure object
* @param SimpleXMLElement $check XML object to be checked
* @return bool Pass true when the structure matches the base object, otherwise false
**/
function checkXmlStructure($base,$check){
/*Check attributes*/
foreach ($base->attributes() as $name => $baseAttr){
                      /*The necessary attributes do not exist*/                                            If(!isset($check->attributes()->$name)){ return false; }
}

/*When there are no child nodes, the check object cannot have child nodes either*/
If(count($base->children())==0){
         return (count($check->children())==0);                               }

/*Group the child nodes of the inspection object*/
$checkChilds = array();
foreach($check->children() as $name => $child){
$checkChilds[$name][] = }

/*Check child nodes*/
$checked = array();
foreach($base->children() as $name => $baseChild){
/*Skip already checked child nodes*/ If(in_array($name, $checked)){ continue; }
$checked[] = $name;
                  /*Check whether necessary child nodes exist*/                                              If(emptyempty($checkChilds[$name])){ return false; }

foreach ($checkChilds[$name] as $child){
                          /*Recursively check child nodes*/                                                  If( !checkXmlStructure($baseChild, $child) ){ return false; }
                                                                       }

Return true;
}

/*================================================ ==============================*/

if(isset($_SERVER['argv'])){
Parse_str(preg_replace('/&[-]+/','&',join('&',$_SERVER['argv'])), $_GET);

If(emptyempty($_GET['base_file']) || emptyempty($_GET['check_file'])){
       echo "Run: ".basename(__FILE__)." base_file=base.xml check_file=check.xmln"; exit(1);
   }

   exit( checkXmlFileStructure($_GET['base_file'],$_GET['check_file']) ? 0 : 1);

}else{
   if(emptyempty($_GET['base_file']) || emptyempty($_GET['check_file'])){
       echo "Run: ".basename(__FILE__)."?base_file=base.xml&check_file=check.xml
"; exit;
   }

   echo( checkXmlFileStructure($_GET['base_file'],$_GET['check_file']) ? '1' : '0');
}

使用方式(shell)

复制代码代码如下:

php check_xml_file_structure.php base_file=base.xml check_file=check.xml

if [ "j$?" != "j0" ]; then
   echo "Run Error"
fi

测试范例 1
base_1.xml

复制代码代码如下: