wddx_serialize_vars

(PHP 4, PHP 5)

wddx_serialize_vars — Serialize variables into a WDDX packet

说明

string wddx_serialize_vars ( mixed $var_name [, mixed $... ] )

Creates a WDDX packet with a structure that contains the serialized representation of the passed variables.

参数

This function takes a variable number of parameters.

var_name: Can be either a string naming a variable or an array containing strings naming the variables or another array, etc.
...

返回值

Returns the WDDX packet, or FALSE on error.

范例

Example #1 wddx_serialize_vars() example

  <?php
$a  =  1 ;
 $b  =  5.5 ;
 $c  = array( "blue" ,  "orange" ,  "violet" );
 $d  =  "colors" ;

 $clvars  = array( "c" ,  "d" );
echo  wddx_serialize_vars ( "a" ,  "b" ,  $clvars );
 ?>

以上例程会输出：

<wddxPacket version='1.0'><header/><data><struct><var name='a'><number>1</number></var>
<var name='b'><number>5.5</number></var><var name='c'><array length='3'>
<string>blue</string><string>orange</string><string>violet</string></array></var>
<var name='d'><string>colors</string></var></struct></data></wddxPacket>

用户评论:

[#1] kangus at jaga dot us [2003-10-13 03:57:28]

A function to use for dates with PHP & WDDX
getdate()

$ta="<FORM><TEXTAREA rows=15 cols=80>" ;
$te="</TEXTAREA></FORM>";
$packet_id=wddx_packet_start("Date Example--");
$myDate=getdate();
wddx_add_vars($packet_id,'myDate');
$package=wddx_packet_end($packet_id);
print($ta.$package.$te);

Produces:

<wddxPacket version='1.0'><header><comment>Date Example--</comment></header>
<data><struct><var name='myDate'>
<struct><var name='seconds'><number>12</number></var>
<var name='minutes'><number>55</number></var>
<var name='hours'><number>1</number></var>
<var name='mday'><number>13</number></var>
<var name='wday'><number>1</number></var>
<var name='mon'><number>10</number></var>
<var name='year'><number>2003</number></var>
<var name='yday'><number>285</number></var>
<var name='weekday'><string>Monday</string></var>
<var name='month'><string>October</string></var>
<var name='0'><number>1066031712</number>
</var></struct></var></struct></data></wddxPacket>

[#2] tychay at alumni dot caltech dot edu [2002-03-31 00:15:36]

The above feature will cause a slight trouble since the name of the variable will always be "wddxtemp" but you can use preg_replace to fix that.

Also, a better approach is to serialize the entire class. WDDX will that write a reserved "php_class_name" variable which can be used to reconstruct the class during a deserialize.

[#3] tychay at alumni dot caltech dot edu [2002-03-30 22:49:01]

You can use globals to get around the above in classes:

<?php class Test { var $str; var $wddx; function Test() { $this->str = "test"; $this->wddx_serialize($this->str); header('Content-Type: text/xml'); echo ($this->wddx); } function wddx_serialize($var) { global $wddxtemp; unset($wddxtemp); $wddxtemp = $var; $this->wddx = wddx_serialize_vars("wddxtemp"); } } new Test(); ?>
-terry

[#4] tychay at alumni dot caltech dot edu [2002-03-30 22:45:24]

[#5] christian dot knoflach at gmx dot at [2001-05-21 15:56:05]

Be careful using WDDX - functions on object variables. As I just had to find out the following won't work:

<?php class Test { var $str; var $wddx; function Test() { $this->str = "test"; $this->wddx = wddx_serialize_vars("this->str"); print(htmlentities($this->wddx)); } } new Test(); ?>

That's what you'll get:
<wddxPacket version='1.0'><header/><data><struct></struct></data></wddxPacket>