(PHP ActiveX) Serialize / Deserialize Hashtable to/from XML

Demonstrates how to seralize / deserialize a Hashtable to/from XML.

Note: This example requires Chilkat v9.5.0.64 or later.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// Note: This example requires Chilkat v9.5.0.64 or later.

// Add some entries to a hashtable.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Hashtable')
$hashTab = new COM("Chilkat.Hashtable");

$hashTab->AddStr('aaa','111');
$hashTab->AddStr('bbb','222');
$hashTab->AddStr('ccc','333');

// Serialize to XML
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sb = new COM("Chilkat.StringBuilder");
$hashTab->ToXmlSb($sb);
print $sb->getAsString() . "\n";
print '---' . "\n";

// The output is as follows.  Each hash table entry
// is contained in an "e" node.  The entry's key
// is in the "k" node, and the value in the "v" node.

// <?xml version="1.0" encoding="utf8-8"?>
// <hashtable>
// <e><k>aaa</k><v>111</v></e>
// <e><k>bbb</k><v>222</v></e>
// <e><k>ccc</k><v>333</v></e>
// </hashtable>
// 

// Now load (deserialize) into a new hash table.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Hashtable')
$hashTab2 = new COM("Chilkat.Hashtable");
$hashTab2->AddFromXmlSb($sb);

// Get the hash table keys, and lookup each (to show 
// that the hash table was correctly deserialized).
// The GetKeys method can return the keys in any order.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringTable')
$sTable = new COM("Chilkat.StringTable");
$hashTab2->GetKeys($sTable);

$i = 0;
$numKeys = $sTable->Count;
while ($i < $numKeys) {
    $key = $sTable->stringAt($i);
    print $key . ': ' . $hashTab2->lookupStr($key) . "\n";
    $i = $i + 1;
}


?>