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Rival67 Smarty n00b
Joined: 15 Oct 2004 Posts: 1
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Posted: Fri Oct 15, 2004 8:49 pm Post subject: New Function: PHP to JavaScript variable converter |
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Hey all,
I have a code contribution for smarty of a plugin function to convert any php variable (intergers, strings, arrays and objects) into a javascript expression. This function has been quite useful and I would hope that it could be reused by other folks. Enjoy,
Nathan Cassano
Code: |
<?php
/**
* Smarty plugin
* @package Smarty
* @subpackage plugins
* @version $Revision: 1 $
*/
/**
* Smarty {php2js} function plugin
*
* Type: function<br>
* Name: php2js
* Date: Oct, 15 2004
* Purpose: Convert a php variable into an javascript expression
* Input:<br>
* - var = Any php variable
* Examples:
* <pre>
* <script language="JavaScript1.2">
* var MyVariable = {php2js var="$var_assignment"};
* </script>
* </pre>
* @version 1.0
* @author Nathan Cassano (nathan out resolutehosting dart com)
* @param mixed
* @param Smarty
* @return string
*
* COPYRIGHT:
* Copyright (c) 2004 Nathan Cassano
* This software is released under the GNU Lesser General Public License.
* Please read the following disclaimer
*
* THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
function smarty_function_php2js($params, &$smarty)
{
if (!isset($params['var'])) {
$smarty->trigger_error("php2js: missing 'var' parameter");
return;
}
return php2js($params['var']);
}
function php2js($var)
{
$retval = '';
$vartype = gettype($var);
switch ($vartype)
{
case 'boolean':
$retval = ($var) ? 'true' : 'false';
break;
case 'integer':
$retval = strval($var);
break;
case 'double':
$retval = strval($var);
break;
case 'string':
$retval = '"'.addcslashes($var, "\0\r\n\"").'"';
break;
case 'array':
// Determine if array is an indexed sequence
$Indexed = true;
$index = 0;
foreach (array_keys($var) as $key)
{
if ($key !== $index)
{
$Indexed = false;
break;
}
$index++;
}
// If indexed array
if ($Indexed)
{
foreach ($var as $value)
{
if ( ! empty($retval)) $retval .= ',';
$retval .= php2js($value);
}
$retval = '['. $retval .']';
}
// Else treat it as an associative array
else
{
foreach ($var as $key => $value)
{
if ( ! empty($retval)) $retval .= ',';
$retval .= php2js($key) . ':' .
php2js($value);
}
$retval = '{'. $retval .'}';
}
break;
case 'object':
foreach (get_object_vars($var) as $key => $value)
{
if ( ! empty($retval)) $retval .= ',';
$retval .= php2js($key) . ':' .
php2js($value);
}
$retval = '{'. $retval .'}';
break;
case 'resource':
$retval = 'null';
break;
case 'NULL':
$retval = 'null';
break;
default:
$retval = "''";
break;
}
return $retval;
}
/* vim: set expandtab: */
?>
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