[英]Converting XML to JSON using xml_parse_into_struct
我正在不具有PHP的simpleXML的服務器上工作,並且需要將XML字符串轉換為JSON,因此我正在使用xml_parse_into_struct()
來完成工作。 然后,我嘗試將它產生的兩個數組與array_combine()
,然后使用json_encode()
返回XML字符串的JSON表示形式。 我遇到的問題是,正在創建的兩個數組xml_parse_into_struct()
長度不相等,因此array_combine()
引發錯誤。 我相信這可能是由於XML字符串中有一堆具有相同名稱的元素引起的。 如何在沒有simpleXML的情況下將此xml字符串轉換為JSON並保留所有元素及其屬性?
碼:
$string =
'<?xml version="1.0" encoding="UTF-8"?>
<session-data xmlns="http://oracle.com/determinations/engine/sessiondata/10.2">
<entity id="global">
<instance id="global">
<attribute id="employer" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="legal" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="foodtype" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="app" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="org" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="tel" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="jfu" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="trans" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="serv" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="cit" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="street" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="zip" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="ddt" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="prov" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="prov2" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="teh" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="dis" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="num" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="ssn" type="text" inferred="false">
<text-val>social</text-val>
</attribute>
<attribute id="eop" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="inst" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="cig" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="nips" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="pay" type="number" inferred="true">
<number-val>200.0</number-val>
</attribute>
<attribute id="data" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="ent" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="ent2" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="person" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="activity" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="tob" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="start" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="tate" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="procs" type="text" inferred="false">
<unknown-val />
</attribute>
<attribute id="officers" type="text" inferred="false">
<text-val>3 or more Officers</text-val>
</attribute>
<attribute id="time" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="year" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="box" type="boolean" inferred="false">
<unknown-val />
</attribute>
<attribute id="digi" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="store" type="boolean" inferred="false">
<boolean-val>true</boolean-val>
</attribute>
<attribute id="rent" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="tain" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="goo" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="building" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="guard" type="boolean" inferred="false">
<boolean-val>false</boolean-val>
</attribute>
<attribute id="hard" type="boolean" inferred="false">
<boolean-val>true</boolean-val>
</attribute>
<unknown-val />
</attribute>
<entity id="regulated" complete="false" inferred="false" />
</instance>
</entity>
</session-data>';
$p = xml_parser_create();
xml_parse_into_struct($p, $string, $vals, $index);
xml_parser_free($p);
$jsonArray = array();
foreach (array_combine( $index, $vals ) as $name => $value) {
$jsonArray[] = array('name' => $name, 'value' => $value);
}
echo "Encoded JSON:<br>";
print_r($json = json_encode($jsonArray));
考慮進一步處理$vals
數組,以解決嵌套樹結構(兄弟姐妹,孩子等)的問題。 照原樣, xml_parse_struct()返回所有處於同一級別的對象,並且僅具有作為嵌套數組的屬性。 下面使用此原始輸出數組並通過xml樹的設計為嵌套結構定義其他具有相應值的數組。
PHP腳本
// EXTRACT XML CONTENT
$p = xml_parser_create();
xml_parse_into_struct($p, $string, $vals, $index);
xml_parser_free($p);
// INITIALIZE PARENT/CHILD ARRAYS
$session = []; $entity = []; $instance = [];
$attribute = []; $boolean = []; $unknown = [];
// POPULATE "OPEN" ELEMENTS WITH ATTRIBUTES
foreach($vals as $v){
if($v['tag'] == "SESSION-DATA" and $v['type']=="open"){
$session['session-data'] = $v['attributes'];
}
if($v['tag'] == "ENTITY" and $v['type']=="open"){
$entity = $v['attributes'];
}
if($v['tag'] == "INSTANCE" and $v['type']=="open"){
$instance = $v['attributes'];
}
}
// NEST BOOLEAN-VAL/UNKNOWN-VAL UNDER ATTRIBUTE
$j=0;
for($i=0; $i<sizeof($vals); $i++){
if($vals[$i]['tag'] == "ATTRIBUTE" and $vals[$i]['type']=="open"){
$attribute[$j] = $vals[$i]['attributes'];
$j++;
}
if($vals[$i]['tag'] == "BOOLEAN-VAL" and $vals[$i]['type']=="complete"){
$boolean['value'] = $vals[$i]['value'];
$attribute[$j-1]['BOOLEAN-VAL'] = $boolean;
}
if($vals[$i]['tag'] == "UNKNOWN-VAL" and $vals[$i]['type']=="complete"){
$unknown['value'] = $vals[$i]['type']=="complete";
$attribute[$j-1]['UNKNOWN-VAL'] = $unknown;
}
}
// ADD CHILD ARRAYS TO PARENTS
$instance['attributes'] = $attribute;
$entity['instance'] = $instance;
$session['session-data']['entity'] = $entity;
echo "Encoded JSON:<br>";
print_r($json = json_encode($session));
// PRETTY PRINT OUTPUT TO FILE
$json = json_encode($session, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
file_put_contents("Output.json", $json);
Pretty Print JSON輸出(根據在線資源 ,是有效的json)
{
"session-data": {
"XMLNS": "http://oracle.com/determinations/engine/sessiondata/10.2",
"entity": {
"ID": "global",
"instance": {
"ID": "global",
"attributes": [
{
"ID": "employer",
"TYPE": "text",
"INFERRED": "false",
"UNKNOWN-VAL": {
"value": true
}
},
{
"ID": "legal",
"TYPE": "text",
"INFERRED": "false",
"UNKNOWN-VAL": {
"value": true
}
},
{
"ID": "foodtype",
"TYPE": "text",
"INFERRED": "false",
"UNKNOWN-VAL": {
"value": true
}
},
...
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