PHP uses simplexml to examine XML file structure instances, simplexmlxml_php tutorial

PHP uses SimpleXML to check the XML file structure instance, Simplexmlxml

Using SimpleXML to check whether the XML structure conforms to specifications, in order to make the program multi-purpose, using a benchmark file as a structural criterion, according to the definition of the node and attributes, to check whether the file conforms to the basic requirements of the format.

Copy CodeThe code is as follows:
<?php

/** checking the XML file structure
* @param string $baseFilePath datum structure file
* @param string $checkFilePath Pending File
* @return BOOL Pass True if the structure matches the benchmark file, otherwise false
* */
function Checkxmlfilestructure ($baseFilePath, $checkFilePath) {
/* Open Base file*/
if (!file_exists ($baseFilePath)) {return false;}
$base = Simplexml_load_file ($baseFilePath);
if ($base ===false) {return false;}

/* Turn on Check file*/
if (!file_exists ($checkFilePath)) {return false;}
$check = Simplexml_load_file ($checkFilePath);
if ($check ===false) {return false;}

/* Compare the starting point name */
if ($base->getname ()! = $check->getname ()) {return false;}

/* Compare structure */
Return Checkxmlstructure ($base, $check);
}

/** Checking the XML structure
* @param simplexmlelement $base Datum Structure Object
* @param simplexmlelement $check The XML object to be examined
* @return BOOL Pass True if the structure matches the Datum object, otherwise false
* */
function Checkxmlstructure ($base, $check) {
/* Check Properties */
foreach ($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 also cannot have child nodes */
if (Count ($base->children ()) ==0) {
Return (COUNT ($check->children ()) ==0);
}

/* Sub-nodes of the check object are grouped */
$checkChilds = Array ();
foreach ($check->children () as $name = = $child) {
$checkChilds [$name] = $child;
}

/* Check child nodes */
$checked = Array ();
foreach ($base->children () as $name = = $baseChild) {
/* Skip the child nodes that have been checked */
if (In_array ($name, $checked)) {continue;}
$checked [] = $name;

/* Check if the necessary child nodes are present */
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.xml\n"; 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 ');
}

How to use (shell)
Copy CodeThe 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
Copy CodeThe code is as follows:
<?xml version= "1.0" encoding= "UTF-8"?>


Category text
Title text


Check_1.xml

<?xml version= "1.0" encoding= "UTF-8"?>


Category text
Title text


Category text
Title text
Description text



Test Example 2
Base_2.xml
Copy CodeThe code is as follows:
<?xml version= "1.0" encoding= "UTF-8"?>



Check_2.xml
<?xml version= "1.0" encoding= "UTF-8"?>

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