PHP uses SimpleXML to check whether the XML file structure is valid.-PHP source code

The SimpleXML function allows you to convert XML into objects. This object can be processed by using a common attribute selector or array iterator, just like any other object. SimpleXML functions are a core component of PHP. These functions can be used without installation. The SimpleXML function allows you to convert XML into objects. This object can be processed by using a common attribute selector or array iterator, just like any other object. SimpleXML functions are a core component of PHP. These functions can be used without installation.

Script ec (2); script

SimpleXML is used to check whether the XML structure meets the specifications. To enable this program to be versatile, a reference file is used as the structure criterion based on the nodes and attributes defined in it, check whether the file meets the basic requirements.

The Code is as follows:

/** Check the XML file structure * @ Param string $ baseFilePath reference structure file * @ Param string $ checkFilePath file to be checked * @ Return bool: If the structure matches the baseline file, true is passed; otherwise, false is used. **/ Function checkXmlFileStructure ($ baseFilePath, $ checkFilePath ){ /* Enable Base File */ If (! File_exists ($ baseFilePath) {return false ;} $ Base = simplexml_load_file ($ baseFilePath ); If ($ base = false) {return false ;} /* Enable Check File */ If (! File_exists ($ checkFilePath) {return false ;} $ Check = simplexml_load_file ($ checkFilePath ); If ($ check = false) {return false ;} /* Compare the start point name */ If ($ base-> getName ()! = $ Check-> getName () {return false ;} /* Comparison structure */ Return checkXmlStructure ($ base, $ check ); } /** Check the XML structure * @ Param SimpleXMLElement $ base structure object * @ Param SimpleXMLElement $ check the XML object to be checked * @ Return bool: If the structure matches the benchmark object, true is passed; otherwise, false is used. **/ Function checkXmlStructure ($ base, $ check ){ /* Check attributes */ Foreach ($ base-> attributes () as $ name => $ baseAttr ){ /* The required attribute does not exist */ If (! Isset ($ check-> attributes ()-> $ name) {return false ;} } /* If no subnode exists, the check object cannot have a subnode */ If (count ($ base-> children () = 0 ){ Return (count ($ check-> children () = 0 ); } /* Group the child nodes of the check object */ $ CheckChilds = array (); Foreach ($ check-> children () as $ name => $ child ){ $ CheckChilds [$ name] [] = $ child; } /* Check the subnode */ $ Checked = array (); Foreach ($ base-> children () as $ name => $ baseChild ){ /* Skip the child node that has been checked */ If (in_array ($ name, $ checked) {continue ;} $ Checked [] = $ name; /* Check whether necessary subnodes exist */ If (emptyempty ($ checkChilds [$ name]) {return false ;} Foreach ($ checkChilds [$ name] as $ child ){ /* Return to check the subnode */ 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 '); }

Usage (shell)

The Code is as follows:
Php check_xml_file_structure.php base_file = base. xml check_file = check. xml If ["j $? "! = "J0"]; then Echo "Run Error" Fi

Test Example 1
Base_1.xml

The Code is as follows:
Category text Title text

Check_1.xml

The Code is as follows:
Category text Title text Category text Title text Description text

Test Example 2
Base_2.xml

The Code is as follows:

Check_2.xml

The Code is as follows: