I’m new to php. I’m following a book but I have got errors which I don’t know how to solve please help me.
HERE IS THE FULL CODES
The error I get comes from the last part of the code and it says.
) Error: Call to a member function _callExternalMethod() on null in C:\wamp\www\hatshop\libs\smarty\sysplugins\smarty_internal_data.php on line 290
<?php
abstract class Smarty_Internal_Data
{
public $_objType = 4;
public $template_class = 'Smarty_Internal_Template';
public $tpl_vars = array();
public $parent = null;
public $config_vars = array();
public $ext = null;
public function __construct()
{
$this->ext = new Smarty_Internal_Extension_Handler();
$this->ext->objType = $this->_objType;
}
public function assign($tpl_var, $value = null, $nocache = false)
{
if (is_array($tpl_var)) {
foreach ($tpl_var as $_key => $_val) {
$this->assign($_key, $_val, $nocache);
}
} else {
if ($tpl_var !== '') {
if ($this->_objType === 2) {
$this->_assignInScope($tpl_var, $value, $nocache);
} else {
$this->tpl_vars[ $tpl_var ] = new Smarty_Variable($value, $nocache);
}
}
}
return $this;
}
public function append($tpl_var, $value = null, $merge = false, $nocache = false)
{
return $this->ext->append->append($this, $tpl_var, $value, $merge, $nocache);
}
public function assignGlobal($varName, $value = null, $nocache = false)
{
return $this->ext->assignGlobal->assignGlobal($this, $varName, $value, $nocache);
}
public function appendByRef($tpl_var, &$value, $merge = false)
{
return $this->ext->appendByRef->appendByRef($this, $tpl_var, $value, $merge);
}
public function assignByRef($tpl_var, &$value, $nocache = false)
{
return $this->ext->assignByRef->assignByRef($this, $tpl_var, $value, $nocache);
}
public function getTemplateVars($varName = null, Smarty_Internal_Data $_ptr = null, $searchParents = true)
{
return $this->ext->getTemplateVars->getTemplateVars($this, $varName, $_ptr, $searchParents);
}
public function getVariable(
$variable = null,
Smarty_Internal_Data $_ptr = null,
$searchParents = true,
$error_enable = true
) {
return $this->ext->getTemplateVars->_getVariable($this, $variable, $_ptr, $searchParents, $error_enable);
}
public function _mergeVars(Smarty_Internal_Data $data = null)
{
if (isset($data)) {
if (!empty($this->tpl_vars)) {
$data->tpl_vars = array_merge($this->tpl_vars, $data->tpl_vars);
}
if (!empty($this->config_vars)) {
$data->config_vars = array_merge($this->config_vars, $data->config_vars);
}
} else {
$data = $this;
}
if (isset($this->parent)) {
$this->parent->_mergeVars($data);
}
}
public function _isDataObj()
{
return $this->_objType === 4;
}
public function _isTplObj()
{
return $this->_objType === 2;
}
public function _isSmartyObj()
{
return $this->_objType === 1;
}
public function _getSmartyObj()
{
return $this->smarty;
}
public function __call($name, $args)
{
return $this->ext->_callExternalMethod($this, $name, $args);
}
}
