PHP

Demonstrate the XML I, J, and K Properties

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Demonstrates the XML I, J, and K properties. These properties can be used in paths to access the I'th, J'th, or K'th child in a path. Three indexing properties are provided to allow for triple-nested loops using this feature.

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

Chilkat2 PHP

<?php

use Chilkat2\StringBuilder;
use Chilkat2\Xml;

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

$xml = new Xml();

$xml->Tag = 'tripleNested';

$i = 0;
$j = 0;
$k = 0;

$sbValue = new StringBuilder();
$bAutoCreate = true;

while ($i < 3) {
    $xml->I = $i;
    $j = 0;
    while ($j < 4) {
        $xml->J = $j;
        $k = 0;
        while ($k < 2) {
            $xml->K = $k;

            $n = $i * 100 + $j * 10 + $k;
            $sbValue->Clear();
            $sbValue->AppendInt($n);

            $xml->UpdateAt('a[i]|b[j]|c[k]', $bAutoCreate, $sbValue->GetAsString());
            $k = $k + 1;
        }

        $j = $j + 1;
    }

    $i = $i + 1;
}

echo $xml->GetXml(), "\n";

// This is the XML
// See below for code showing how to parse it..

/*
 *     <?xml version="1.0" encoding="utf-8" ?>
 *     <tripleNested>
 *         <a>
 *             <b>
 *                 <c>0</c>
 *                 <c>1</c>
 *             </b>
 *             <b>
 *                 <c>10</c>
 *                 <c>11</c>
 *             </b>
 *             <b>
 *                 <c>20</c>
 *                 <c>21</c>
 *             </b>
 *             <b>
 *                 <c>30</c>
 *                 <c>31</c>
 *             </b>
 *         </a>
 *         <a>
 *             <b>
 *                 <c>100</c>
 *                 <c>101</c>
 *             </b>
 *             <b>
 *                 <c>110</c>
 *                 <c>111</c>
 *             </b>
 *             <b>
 *                 <c>120</c>
 *                 <c>121</c>
 *             </b>
 *             <b>
 *                 <c>130</c>
 *                 <c>131</c>
 *             </b>
 *         </a>
 *         <a>
 *             <b>
 *                 <c>200</c>
 *                 <c>201</c>
 *             </b>
 *             <b>
 *                 <c>210</c>
 *                 <c>211</c>
 *             </b>
 *             <b>
 *                 <c>220</c>
 *                 <c>221</c>
 *             </b>
 *             <b>
 *                 <c>230</c>
 *                 <c>231</c>
 *             </b>
 *         </a>
 *     </tripleNested>
 *
 */

// Parse the XML, without needing to know the number of children.
// That can be discovered with the NumChildrenAt method.

$i = 0;
$aCount = $xml->NumChildren;
while ($i < $aCount) {
    $xml->I = $i;
    $j = 0;
    $bCount = $xml->NumChildrenAt('a[i]');
    while ($j < $bCount) {
        $xml->J = $j;
        $k = 0;
        $cCount = $xml->NumChildrenAt('a[i]|b[j]');
        while ($k < $cCount) {
            $xml->K = $k;
            echo $i, ', ', $j, ', ', $k, ': ', $xml->GetChildIntValue('a[i]|b[j]|c[k]'), "\n";
            $k = $k + 1;
        }

        $j = $j + 1;
    }

    $i = $i + 1;
}

// Output:

//     0, 0, 0: 0
//     0, 0, 1: 1
//     0, 1, 0: 10
//     0, 1, 1: 11
//     0, 2, 0: 20
//     0, 2, 1: 21
//     0, 3, 0: 30
//     0, 3, 1: 31
//     1, 0, 0: 100
//     1, 0, 1: 101
//     1, 1, 0: 110
//     1, 1, 1: 111
//     1, 2, 0: 120
//     1, 2, 1: 121
//     1, 3, 0: 130
//     1, 3, 1: 131
//     2, 0, 0: 200
//     2, 0, 1: 201
//     2, 1, 0: 210
//     2, 1, 1: 211
//     2, 2, 0: 220
//     2, 2, 1: 221
//     2, 3, 0: 230
//     2, 3, 1: 231
//