PHP implementation of the return data format class Instance _php tutorial

PHP implementation of the return data format class instance

The DataReturn.class.php class file is as follows:

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/** Return Data Formatting class * DATE:2011-08-15 * Author:fdipzone */ Class datareturn{//Class start Private $type; Private $xmlroot; Private $callback; Private $returnData; Public function __construct ($param =array ()) { $this->type = $this->exists ($param, ' type ')? Strtoupper ($param [' type ']): ' JSON '; Type Json,xml,callback,array $this->xmlroot = $this->exists ($param, ' XmlRoot ')? $param [' XmlRoot ']: ' XmlRoot '; XML root DOM Name $this->callback = $this->exists ($param, ' callback ')? $param [' Callback ']: '; JS callback Function name $format = Array (); $format [' retcode '] = $this->exists ($param, ' Format.retcode ')? $param [' Format '] [' retcode ']: ' Retcode ';//retcode corresponding name $format [' msg '] = $this->exists ($param, ' format.msg ')? $param [' Format '] [' msg ']: ' msg '; MSG corresponding Name $format [' data '] = $this->exists ($param, ' Format.data ')? $param [' Format '] [' data ']: ' Data '; Data corresponding name $result = Array (); $result [$format [' retcode ']] = $this->exists ($param, ' Retcode ')? $param [' Retcode ']: 0; $result [$format [' msg ']] = $this->exists ($param, ' msg ')? $param [' msg ']: '; $result [$format [' data '] = $this->exists ($param, ' data ')? $param [' Data ']: '; $this->returndata = $result; } Output data Public Function Data_return () { Ob_clean (); Switch ($this->type) { Case ' JSON ': $this->json_return (); Break Case ' XML ': $this->xml_return (); Break Case ' CALLBACK ': $this->callback_return (); Break Case ' ARRAY ': $this->array_return (); Break Default $this->json_return (); } Exit (); } Output JSON format data, return JSONP format if callback parameter is available Private Function Json_return () { Header (' Content-type:text/html;charset=utf-8 '); if (Empty ($this->callback)) { Echo Json_encode ($this->returndata); }else{ echo $this->callback. ' ('. Json_encode ($this->returndata). '; } } Output XML Format data Private Function Xml_return () { Header (' Content-type:text/xml;charset=utf-8 '); echo $this->xml_encode ($this->returndata, $this->xmlroot); } Output JSON format data and call the callback method Private Function Callback_return () { Header (' Content-type:text/html;charset=utf-8 '); $this->callback = Empty ($this->callback)? ' Callback ': $this->callback; echo ""; } Output Array Format data Private Function Array_return () { Header (' Content-type:text/html;charset=utf-8 '); Echo ' Echo ' '; } XML encoding Private Function Xml_encode ($data, $root = ' XmlRoot ', $encoding = ' utf-8 ') { $xml = " \ n"; $xml. = "<". $root. ">\n"; $xml. = $this->data_to_xml ($data); $xml. = " "; return $xml; } Array to XML format Private Function Data_to_xml ($data) { if (Is_object ($data)) { $data = Get_object_vars ($data); } $xml = "; foreach ($data as $key = = $val) { Is_numeric ($key) && $key = "Item id=\" $key \ ""; $xml. = "< $key >"; $xml. = (Is_array ($val) | | is_object ($val))? $this->data_to_xml ($val): $this->cdata ($val); List ($key,) = Explode ("', $key); $xml. = " \ n"; } return $xml; } Determine if the data exists Private function exists ($obj, $key = ") { if ($key = = ") { return Isset ($obj) &&!empty ($obj); }else{ $keys = Explode ('. ', $key); For ($i =0, $max =count ($keys), $i < $max; $i + +) { if (Isset ($obj [$keys [$i]]) { $obj = $obj [$keys [$i]]; }else{ return false; } } return Isset ($obj) &&!empty ($obj); } } Determine if you need to add a tag Private Function CDATA ($val) { if (!empty ($val) &&!preg_match ('/^[a-za-z0-9+$]/', $val)) { $val = " '.$val.' ; } return $val; } }//Class end ?>

The Demo sample program is as follows:

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!--? php Require_once (' DataReturn.class.php '); $param = Array (///DataReturn parameter ' type ' = ' json ',//output type Json,xml,callback,array default to JSON ' RET The value of code ' = ' + ',///Retcode, defaults to 0 ' msg ' = ', '//msg ' value, default is null ' data ' = = Array (//outputs to be output ' id ' = ', ' ' name ' = ' Fdipzone ', ' Gender ' = 1, ' Age ' = ), ' format ' = = Array (//Output Data key format, default = Retcode,msg,data ' retcode ' = ' status ', ' msg ') = ' Info ', ' data ' = ' result ' ), ' xmlroot ' + ' xmlroot ',//when type=xml, XML root node name, default to XM Lroot ' callback ' = ' callback '/* callback method name Type=json, default is NULL, if not NULL, output callback ({data}); Type=callback, the default is callback, automatically invoke the page JS callback method */ ); $obj = new DataReturn ($param);//Create DataReturn Class object $obj->data_return ();//output data by format ; p>

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