PHP: Полезные (интересные и оригинальные) решения - [108] :: Web-программирование

Код:

<?php
/*********************************************************************************************************************\
*
* AUTHOR
* =============
* Kwaku Otchere
* ospinto@hotmail.com
*
* Thanks to Andrew Hewitt (rudebwoy@hotmail.com) for the idea and suggestion
*
* All the credit goes to ColdFusion's brilliant cfdump tag
* Hope the next version of PHP can implement this or have something similar
* I love PHP, but var_dump BLOWS!!!
*
* FOR DOCUMENTATION AND MORE EXAMPLES: VISIT http://dbug.ospinto.com
*
*
* PURPOSE
* =============
* Dumps/Displays the contents of a variable in a colored tabular format
* Based on the idea, javascript and css code of Macromedia's ColdFusion cfdump tag
* A much better presentation of a variable's contents than PHP's var_dump and print_r functions
*
*
* USAGE
* =============
* new dBug ( variable [,forceType] );
* example:
* new dBug ( $myVariable );
*
*
* if the optional "forceType" string is given, the variable supplied to the
* function is forced to have that forceType type.
* example: new dBug( $myVariable , "array" );
* will force $myVariable to be treated and dumped as an array type,
* even though it might originally have been a string type, etc.
*
* NOTE!
* ==============
* forceType is REQUIRED for dumping an xml string or xml file
* new dBug ( $strXml, "xml" );
*
\*********************************************************************************************************************/

class dBug {

    var $isPhp5        = false;
    var $traversed    = array(); // for PHP5 only
    var $xmlDepth    = array();
    var $xmlCData;
    var $xmlSData;
    var $xmlDData;
    var $xmlCount    = 0;
    var $xmlAttrib;
    var $xmlName;
    var $arrType    = array("array", "object", "resource", "boolean");

    //constructor
    function dBug($var,$forceType="") {
        $this->isPhp5 = (substr(phpversion(), 0, 1)) === '5';
        $arrAccept=array("array","object","xml"); //array of variable types that can be "forced"
        if (in_array($forceType,$arrAccept))
            $this->{"varIs".ucfirst($forceType)}($var);
        else
            $this->checkType($var);
    }

    //create the main table header
    function makeTableHeader($type,$header,$colspan=2) {
        echo "<table cellspacing=\"2\" cellpadding=\"3\" class=\"dBug_".$type."\">
                <tr>
                    <td class=\"dBug_".$type."Header\" colspan=".$colspan." onClick='dBug_toggleTable(this)'>".$header."</td>
                </tr>";
    }

    //create the table row header
    function makeTDHeader($type,$header) {
        echo "<tr>
                <td valign=\"top\" onClick='dBug_toggleRow(this)' class=\"dBug_".$type."Key\">".$header."</td>
                <td>";
    }

    //close table row
    function closeTDRow() {
        return "</td>\n</tr>\n";
    }

    //error
    function error($type) {
        $error="Error: Variable is not a";
        //thought it would be nice to place in some nice grammar techniques

// this just checks if the type starts with a vowel or "x" and displays either "a" or "an"
        if(in_array(substr($type,0,1),array("a","e","i","o","u","x")))
            $error.="n";
        return ($error." ".$type." type");
    }

    //check variable type
    function checkType(&$var) {
        switch(gettype($var)) {
            case "resource":
                $this->varIsResource($var);
                break;
            case "object":
                $this->varIsObject($var);
                break;
            case "array":
                $this->varIsArray($var);
                break;
            case "boolean":
                $this->varIsBoolean($var);
                break;
            default:
                $this->varIsSimple($var);
//                $var=($var=="") ? "[empty string]" : $var;
//                echo "<table cellspacing=\"0\"><tr>\n<td>".$var."</td>\n</tr>\n</table>\n";
                break;
        }
    }
    //if variable is a simple type
function varIsSimple($var) {

$this->makeTableHeader("array",gettype($var));

$var = (gettype($var) == "boolean") ? ($var ? "true" : "false" ) : $var;

echo "<tr>\n<td colspan=\"2\">".$this->quoteHtml($var)."</td>\n</tr>\n";
echo "</table>";

}

    function quoteHtml( $text ) {
return nl2br(htmlspecialchars($text));
}

    //if variable is a boolean type
    function varIsBoolean($var) {
        $var=($var==1) ? "TRUE" : "FALSE";
        echo $var;
    }

    //if variable is an array type
    function varIsArray(&$var) {
        $this->makeTableHeader("array","array");
        if(is_array($var)) {
            foreach($var as $key=>$value) {
                $this->makeTDHeader("array",$key);
                if(in_array(gettype($value),$this->arrType))
                    $this->checkType($value);
                else {
                    $value=(trim($value)=="") ? "[empty string]" : $value;
                    echo $value."</td>\n</tr>\n";
                }
            }
        }
        else echo "<tr><td>".$this->error("array").$this->closeTDRow();
        echo "</table>";
    }

    //if variable is an object type
    function varIsObject(&$var) {
     static $objNum = 1;
     $traversed = false;
     if ($this->isPhp5) {
     if (!isset($this->traversed[(string)$var])) {
         $this->traversed[(string)$var] = true;
     } else {
     $traversed = (string)$var . " (" . get_class($var) . ")";
     }
     } else {
     if (!isset($var->_dBug_Was_Here)) {
     $var->_dBug_Was_Here = $objNum++;
     } else {
     $traversed = get_class($var) . ' #' . $var->_dBug_Was_Here;
     }
     }
     if ($traversed) {
          echo "link to $traversed";
          return;
     }
        if ($this->isPhp5) {
            $this->makeTableHeader("object", (string)$var . " (" . get_class( $var ) . ")");
        } else {
            $this->makeTableHeader("object","object #" . ($objNum - 1) . " (" . get_class( $var ) . ")");
        }

        if (is_object($var)) {
         $arrObjVars = get_object_vars($var);
         $arrObjMethods = get_class_methods(get_class($var));
            foreach ($arrObjVars as $key=>$value) {
                $value = &$arrObjVars[$key];
             if ($key=="_dBug_Was_Here")
             continue;
                $value=(empty($value)) ? "[empty]" : $value;
                $this->makeTDHeader("object",$key);
                if (in_array(gettype($value),$this->arrType)) {
                    $this->checkType($value);
                    echo $this->closeTDRow();
                }
                else echo $value.$this->closeTDRow();
            }
            foreach ($arrObjMethods as $key=>$value) {
                $this->makeTDHeader("object",$value);
                echo "[function]".$this->closeTDRow();
            }
        }
        else echo "<tr><td>".$this->error("object").$this->closeTDRow();
        echo "</table>";
    }

    //if variable is a resource type
    function varIsResource($var) {
        $this->makeTableHeader("resourceC","resource",1);
        echo "<tr>\n<td>\n";
        switch(get_resource_type($var)) {
            case "fbsql result":
            case "mssql result":
            case "msql query":
            case "pgsql result":
            case "sybase-db result":
            case "sybase-ct result":
            case "mysql result":
                $db = current(explode(" ",get_resource_type($var)));
                $this->varIsDBResource($var, $db);
                break;
            case "gd":
                $this->varIsGDResource($var);
                break;
            case "xml":
                $this->varIsXmlResource($var);
                break;
            default:
                echo get_resource_type($var).$this->closeTDRow();
                break;
        }
        echo $this->closeTDRow()."</table>\n";
    }

    //if variable is an xml type
    function varIsXml($var) {
        $this->varIsXmlResource($var);
    }

    //if variable is an xml resource type
    function varIsXmlResource($var) {
        $xml_parser=xml_parser_create();
        xml_parser_set_option($xml_parser,XML_OPTION_CASE_FOLDING,0);
        xml_set_element_handler($xml_parser,array(&$this,"xmlStartElement"),array(&$this,"xmlEndElement"));
        xml_set_character_data_handler($xml_parser,array(&$this,"xmlCharacterData"));
        xml_set_default_handler($xml_parser,array(&$this,"xmlDefaultHandler"));

        $this->makeTableHeader("xml","xml document",2);
        $this->makeTDHeader("xml","xmlRoot");

        //attempt to open xml file
        $bFile=(!($fp=@fopen($var,"r"))) ? false : true;

        //read xml file
        if ($bFile) {
            while($data=str_replace("\n","",fread($fp,4096)))
                $this->xmlParse($xml_parser,$data,feof($fp));
        }
        //if xml is not a file, attempt to read it as a string
        else {
            if(!is_string($var)) {
                echo $this->error("xml").$this->closeTDRow()."</table>\n";
                return;
            }
            $data=$var;
            $this->xmlParse($xml_parser,$data,1);
        }

        echo $this->closeTDRow()."</table>\n";

    }

    //parse xml
    function xmlParse($xml_parser,$data,$bFinal) {
        if (!xml_parse($xml_parser,$data,$bFinal)) {
                 die(sprintf("XML error: %s at line %d\n",
                             xml_error_string(xml_get_error_code($xml_parser)),
                             xml_get_current_line_number($xml_parser)));
        }
    }

    //xml: inititiated when a start tag is encountered
    function xmlStartElement($parser,$name,$attribs) {
        $this->xmlAttrib[$this->xmlCount]=$attribs;
        $this->xmlName[$this->xmlCount]=$name;
        $this->xmlSData[$this->xmlCount]='$this->makeTableHeader("xml","xml element",2);';
        $this->xmlSData[$this->xmlCount].='$this->makeTDHeader("xml","xmlName");';
        $this->xmlSData[$this->xmlCount].='echo "<strong>'.$this->xmlName[$this->xmlCount].'</strong>".$this->closeTDRow();';
        $this->xmlSData[$this->xmlCount].='$this->makeTDHeader("xml","xmlAttributes");';
        if(count($attribs)>0)
            $this->xmlSData[$this->xmlCount].='$this->varIsArray($this->xmlAttrib['.$this->xmlCount.']);';
        else
            $this->xmlSData[$this->xmlCount].='echo " ";';
        $this->xmlSData[$this->xmlCount].='echo $this->closeTDRow();';
        $this->xmlCount++;
    }

    //xml: initiated when an end tag is encountered
    function xmlEndElement($parser,$name) {
        for($i=0;$i<$this->xmlCount;$i++) {
            eval($this->xmlSData[$i]);
            $this->makeTDHeader("xml","xmlText");
            echo (!empty($this->xmlCData[$i])) ? $this->xmlCData[$i] : " ";
            echo $this->closeTDRow();
            $this->makeTDHeader("xml","xmlComment");
            echo (!empty($this->xmlDData[$i])) ? $this->xmlDData[$i] : " ";
            echo $this->closeTDRow();
            $this->makeTDHeader("xml","xmlChildren");
            unset($this->xmlCData[$i],$this->xmlDData[$i]);
        }
        echo $this->closeTDRow();
        echo "</table>";
        $this->xmlCount=0;
    }

    //xml: initiated when text between tags is encountered
    function xmlCharacterData($parser,$data) {
        $count=$this->xmlCount-1;
        if(!empty($this->xmlCData[$count]))
            $this->xmlCData[$count].=$data;
        else
            $this->xmlCData[$count]=$data;
    }

    //xml: initiated when a comment or other miscellaneous texts is encountered
    function xmlDefaultHandler($parser,$data) {
        //strip '' off comments
        $data=str_replace(array(""),"",htmlspecialchars($data));
        $count=$this->xmlCount-1;
        if(!empty($this->xmlDData[$count]))
            $this->xmlDData[$count].=$data;
        else
            $this->xmlDData[$count]=$data;
    }

    //if variable is a database resource type
    function varIsDBResource($var,$db="mysql") {
        $numrows=call_user_func($db."_num_rows",$var);
        $numfields=call_user_func($db."_num_fields",$var);
        $this->makeTableHeader("resource",$db." result",$numfields+1);
        echo "<tr><td class=\"dBug_resourceKey\"> </td>";
        for($i=0;$i<$numfields;$i++) {
            $field[$i]=call_user_func($db."_fetch_field",$var,$i);
            echo "<td class=\"dBug_resourceKey\">".$field[$i]->name."</td>";
        }
        echo "</tr>";
        for($i=0;$i<$numrows;$i++) {
            $row=call_user_func($db."_fetch_array",$var,constant(strtoupper($db)."_ASSOC"));
            echo "<tr>\n";
            echo "<td class=\"dBug_resourceKey\">".($i+1)."</td>";
            for($k=0;$k<$numfields;$k++) {
                $tempField=$field[$k]->name;
                $fieldrow=$row[($field[$k]->name)];
                $fieldrow=($fieldrow=="") ? "[empty string]" : $fieldrow;
                echo "<td>".$fieldrow."</td>\n";
            }
            echo "</tr>\n";
        }
        echo "</table>";
        if($numrows>0)
            call_user_func($db."_data_seek",$var,0);
    }

    //if variable is an image/gd resource type
    function varIsGDResource($var) {
        $this->makeTableHeader("resource","gd",2);
        $this->makeTDHeader("resource","Width");
        echo imagesx($var).$this->closeTDRow();
        $this->makeTDHeader("resource","Height");
        echo imagesy($var).$this->closeTDRow();
        $this->makeTDHeader("resource","Colors");
        echo imagecolorstotal($var).$this->closeTDRow();
        echo "</table>";
    }
}
?>

Модерирует : Cheery
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