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Posted By

Pjotor on 03/24/10


Tagged

get json soap rest leoSr abstraction


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GETful SOAP to JSON

 / Published in: PHP
 

A really simple SOAP to JSON and back script, for when you just want to kick SOAP in the groin.

With jQuery you'd just do: $.getJSON('path/?function=myFunc&params={"param":"value"}&callback=?',function(json){alert(json);});

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  1. <?php
  2.  
  3. /**	
  4.  *	Returns a JSON formatted response with optional callback-wrapping 
  5.  *	@param {String} 	function 	SOAP function to be called from the 
  6.  *                                              external WS
  7.  *	@param {JSONObject} params 		Parameters to be sent to the SOAP function
  8.  *	@param {bool} 		debug 		Debug switch (optional)
  9.  *	@param {String}		callback 	Callback function name (optional, defaults 
  10.  *                                              to @function)
  11.  *
  12.  *	Example:
  13.  *	?function=mySOAPFunction&params={"SOAPParam":"value"}&
  14.  *                callback=callbackFunction&debug=true
  15.  */
  16.  
  17. 	$SOAPFunction 	= (isset($_GET["function"])) ? $_GET["function"] : false;
  18. 	$SOAPParams 	= (isset($_GET["params"])) ? json_decode($_GET["params"]): false;
  19. 	$SOAPDebug	= (isset($_GET["debug"])) ? true : false;
  20. 	$SOAPCallback 	= (isset($_GET["callback"])) ? $_GET["callback"] : $SOAPFunction;
  21.  
  22. 	if($SOAPFunction && $SOAPParams) {
  23.  
  24. 		$wsdl = "http://example.com/mySOAP.wsdl";	
  25.  
  26. 		try {  
  27. 			$client = new SoapClient($wsdl,array(
  28. 				"trace"      => true,
  29. 				"exceptions" => $SOAPDebug));
  30.  
  31. 			$client -> call($SOAPFunction, $SOAPParams);
  32.  
  33. // NOTE:
  34. // in .NET you need a hack like this:
  35. /*
  36. 			switch($SOAPFunction) {
  37. 				case strtolower("mySOAPFunction"):
  38. 					$client -> mySOAPFunction($SOAPParams);
  39. 					break;
  40. 				default:
  41. 					die("no function found");
  42. 			}
  43. */
  44.  
  45. 			$lastReq = $client->__getLastRequest();
  46. 			$lastResp = $client->__getLastResponse();
  47.  
  48. // Comment to disable echoing of SOAP-envelope if the debug is on
  49. 			if($SOAPDebug){
  50. 				echo "\n/*\n";
  51. 				echo "Request: \n";
  52. 				echo $lastReq;
  53. 				echo "\n Response:\n";
  54. 				echo $lastResp ;
  55. 				echo "\n*/\n\n";			
  56. 			}
  57.  
  58. 			print $SOAPCallback . "(" . xml2json(strtolower($lastResp)) . 
  59.                                               ");";
  60.  
  61. 		} catch (Exception $e) {
  62. 			print $SOAPCallback . "({\"soap:Envelope\":\"_c\":{\"soap:Body\":".
  63. 					      "{\"_c\":{\"error\":{ \"{$SOAPFunction}\":{".
  64. 					      "\"message\": \"" . $e->__toString() . "\"}".
  65. 				              "}}}}});";
  66. 		}
  67. 	}
  68.  
  69.  
  70.  
  71. 	function xml2json(&$xml) {
  72. 		return json_encode(xml2ary($xml));
  73. 	}	
  74.  
  75.  
  76.  
  77. // xml to array
  78. // author: leoSr
  79. // http://mysrc.blogspot.com/2007/02/php-xml-to-array-and-backwards.html
  80.  
  81. 	function xml2ary(&$string) {
  82. 		$parser = xml_parser_create();
  83. 		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
  84. 		xml_parse_into_struct($parser, $string, $vals, $index);
  85. 		xml_parser_free($parser);
  86.  
  87. 		$mnary=array();
  88. 		$ary=&$mnary;
  89. 		foreach ($vals as $r) {
  90. 			$t=$r['tag'];
  91. 			if ($r['type']=='open') {
  92. 				if (isset($ary[$t])) {
  93. 					if (isset($ary[$t][0])) $ary[$t][]=array(); 
  94.                                         else $ary[$t]=array($ary[$t], array());
  95. 					$cv=&$ary[$t][count($ary[$t])-1];
  96. 				} else $cv=&$ary[$t];
  97. 				if (isset($r['attributes'])) {
  98.                                 foreach ($r['attributes'] as $k=>$v) $cv['_a'][$k]=$v;}
  99. 				$cv['_c']=array();
  100. 				$cv['_c']['_p']=&$ary;
  101. 				$ary=&$cv['_c'];
  102. 			} elseif ($r['type']=='complete') {
  103. 				if (isset($ary[$t])) { // same as open
  104. 					if (isset($ary[$t][0])) $ary[$t][]=array(); 
  105.                                         else $ary[$t]=array($ary[$t], array());
  106. 					$cv=&$ary[$t][count($ary[$t])-1];
  107. 				} else $cv=&$ary[$t];
  108. 				if (isset($r['attributes'])) {
  109.                                 foreach ($r['attributes'] as $k=>$v) $cv['_a'][$k]=$v;}
  110. 				$cv['_v']=(isset($r['value']) ? $r['value'] : '');
  111. 			} elseif ($r['type']=='close') {
  112. 				$ary=&$ary['_p'];
  113. 			}
  114. 		}    
  115.  
  116. 		_del_p($mnary);
  117. 		return $mnary;
  118. 	}
  119.  
  120. 	// _Internal: Remove recursion in result array
  121. 	function _del_p(&$ary) {
  122. 		foreach ($ary as $k=>$v) {
  123. 			if ($k==='_p') unset($ary[$k]);
  124. 			elseif (is_array($ary[$k])) _del_p($ary[$k]);
  125. 		}
  126. 	}
  127. ?>

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