DZone Snippets: variable code

Output JavaScript variables from PHP

jonasraoni (Jonas Raoni Soares Silva) — Wed, 09 Apr 2008 23:57:18 GMT

Class with useful static methods for outputting PHP values into JavaScript format.



//+ Jonas Raoni Soares Silva

//@ http://jsfromhell.com



class JS{

	//generic and maybe not the desired results xD

	function value($o){

		if($o === null)

			return 'null';

		$t = strtolower(gettype($o));

		if($t == 'string' && is_numeric($o) && ($o[0] || strlen($o) == 1) || in_array($t, array('double', 'integer')))

			$t = 'number';

		elseif($t == 'string' && preg_match('@^\d{4}(?:-\d{1,2}){1,2}(?: (?:\d{1,2}:){2}\d{1,2})?$@', $o)) //strtotime works also with "strange" values strtotime('x')

			$t = 'date';

		elseif($t == 'array' && ($c = count($k = array_keys($o))) && $k !== range(0, $c - 1))

			$t = 'object';

		elseif(!in_array($t, array('boolean', 'string', 'array', 'object')))

			$t = 'string';

		$t = 'from' . $t;

		return self::$t($o);

	}

	function fromNumber($o){

		return +$o . '';

	}

	function fromObject($o){

		$r = array();

		foreach($o as $n => $v)

			$r[] = self::fromString($n) . ':' . self::value($v);

		return '{' . implode(',', $r) . '}';

	}

	function fromBoolean($o){

		return $o ? 'true' : 'false';

	}

	//$q = should quote? 

	//$c = char that will be used to quote

	function fromString($o, $q = true, $c = '"'){

		return ($p = $q ? $c : '') . preg_replace('/\r\n|\n\r|\r/', '\n', str_replace($c, '\\' . $c, str_replace('\\', '\\\\', $o))) . $p;

	}

	function fromArray($o){

		$s = '';

		foreach($o as $v)

			$s .= ($s ? ',' : '') . self::value($v);

		return '[' . $s . ']';

	}

	function fromDate($o){

		(is_numeric($o) && $o = +$o) || ($o = strtotime($o)) > 0 || ($o = mktime());

		$o = explode(',', date('Y,n,j,G,i,s', $o));

		foreach($o as $i => $v)

			$o[$i] = +$v;

		return 'new Date(' . implode(',', $o)  . ')';

	}

}

Example



$o = new stdClass;

$o->abc = 123;

echo implode("\n
", array(

	JS::value('1984-07-22 11:30:12'),

	JS::value('Test'),

	JS::value(1234),

	JS::value(true),

	JS::value(array(1,2,3)),

	JS::value(array('lala' => 'x')),

	JS::value($o)

));

Setting a string variable with a mult-line text value

jrobertson (James Robertson) — Mon, 07 Jan 2008 16:54:54 GMT

This example demonstrates how easy it is to copy and paste human-readable text from elsewhere and declare it as a string in your code.



string = <  

    Text, text, text

  

RUBY_RUBY_RUBY

Note: Remember to encase the text within a pair of strings, any string (the convention is to make it uppercase) and ensure it's not a reserved keyword, or a variable declared already.

JavaScript var_dump (Mark 2)

singpolyma () — Thu, 12 Jul 2007 15:29:58 GMT

Same as var_dump for PHP, but for JavaScript. Useful if you do not have Firebug.

A typical useage:

document.write(var_dump(ANY-JS-VAR,'html'));



     function var_dump(data,addwhitespace,safety,level) {

        var rtrn = '';

        var dt,it,spaces = '';

        if(!level) {level = 1;}

        for(var i=0; i           spaces += '   ';

        }//end for i        if(typeof(data) != 'object') {

           dt = data;

           if(typeof(data) == 'string') {

              if(addwhitespace == 'html') {

                 dt = dt.replace(/&/g,'&');

                 dt = dt.replace(/>/g,'>');

                 dt = dt.replace(/              }//end if addwhitespace == html

              dt = dt.replace(/\"/g,'\"');

              dt = '"' + dt + '"';

           }//end if typeof == string

           if(typeof(data) == 'function' && addwhitespace) {

              dt = new String(dt).replace(/\n/g,"\n"+spaces);

              if(addwhitespace == 'html') {

                 dt = dt.replace(/&/g,'&');

                 dt = dt.replace(/>/g,'>');

                 dt = dt.replace(/              }//end if addwhitespace == html

           }//end if typeof == function

           if(typeof(data) == 'undefined') {

              dt = 'undefined';

           }//end if typeof == undefined

           if(addwhitespace == 'html') {

              if(typeof(dt) != 'string') {

                 dt = new String(dt);

              }//end typeof != string

              dt = dt.replace(/ /g," ").replace(/\n/g,"
");

           }//end if addwhitespace == html

           return dt;

        }//end if typeof != object && != array

        for (var x in data) {

           if(safety && (level > safety)) {

              dt = '*RECURSION*';

           } else {

              try {

                 dt = var_dump(data[x],addwhitespace,safety,level+1);

              } catch (e) {continue;}

           }//end if-else level > safety

           it = var_dump(x,addwhitespace,safety,level+1);

           rtrn += it + ':' + dt + ',';

           if(addwhitespace) {

              rtrn += '\n'+spaces;

           }//end if addwhitespace

        }//end for...in

        if(addwhitespace) {

           rtrn = '{\n' + spaces + rtrn.substr(0,rtrn.length-(2+(level*3))) + '\n' + spaces.substr(0,spaces.length-3) + '}';

        } else {

           rtrn = '{' + rtrn.substr(0,rtrn.length-1) + '}';

        }//end if-else addwhitespace

        if(addwhitespace == 'html') {

           rtrn = rtrn.replace(/ /g," ").replace(/\n/g,"
");

        }//end if addwhitespace == html

        return rtrn;

     }//end function var_dump

PHP variable check

alexwilliams (Alex Williams) — Wed, 03 Jan 2007 13:09:30 GMT

ugh



$page = isset($_GET['page']) ? $_GET['page'] : 'home';

Python - Simple Example CGI

whitetiger () — Sun, 10 Dec 2006 16:48:24 GMT

// http://localhost/cgi-bin/example.py?variable=example



import cgi



print 'Content-type: text/html\r\n'



inputValue = cgi.FieldStorage()



if(inputValue.has_key('variable')):

  print inputValue['variable'].value

Ruby - Trace Variable Global

whitetiger () — Sat, 25 Nov 2006 19:47:22 GMT

// Tracciare variabili Globali



trace_var:$variabileGlobale, proc{ print "variabileGlobale modificata al valore --> ", $variabileGlobale, " "}

parameterized instance variables

mkovacs () — Tue, 10 Jan 2006 04:24:03 GMT

// useful when you want to obtain more than one instance of the same type of variable on the
// same page. i.e. two different addresses. credit goes to argv[0] in #rubyonrails on freenode



instance_variable_get("@#{address_type}_address").country.name

var_dump for javascript

singpolyma () — Wed, 21 Sep 2005 23:31:16 GMT

hackish implementation of the php 'var_dump()' in javascript:



function var_dump(obj) {

   if(typeof obj == "object") {

      return "Type: "+typeof(obj)+((obj.constructor) ? "\nConstructor: "+obj.constructor : "")+"\nValue: " + obj;

   } else {

      return "Type: "+typeof(obj)+"\nValue: "+obj;

   }

}//end function var_dump

change integer variables content

jonasraoni (Jonas Raoni Soares Silva) — Sat, 02 Jul 2005 04:02:49 GMT



//+ Jonas Raoni Soares Silva

//@ http://jsfromhell.com



#include

#include

void main(){

	int a, b;

	clrscr();



	printf( "Digite a= " );

	scanf( "%d", &a );



	printf( "Digite b= " );

	scanf( "%d", &b );



	a = b - a + ( b = a );



	printf( "a= %d\nb= %d", a, b);

	getch();

}

*