isset on array

[beaceberq]

isset is not generated when we specify the object's property / method as an index

Example:
Code on .tpl:
{if isset($specialOffers[$category->getId()])}gray{/if}
Generated code:
<?php if ((($_smarty_tpl->tpl_vars['specialOffers']->value[$_smarty_tpl->tpl_vars['category']->value->getId()] !== null ))) {?>gray<?php }?>

[JuMiLo]

Hi,

the same happens when using "variable variables" within isset.

Template code:

{foreach $array AS $key => $val}
	{if !isset(${$key})}
	
	{assign var=$key value=$val}
	
	{/if}
{/foreach}

Generated code:
<?php if (!(($_smarty_tpl->tpl_vars[''.($_smarty_tpl->tpl_vars['key']->value)]->value !== null ))) {?>

The output is generated in the file "smarty_internal_templatecompilerbase.php" (function "compilePHPFunctionCall") on line 633.

Is it safe to replace the responsible line of code
$pa[] = (strpos($p, '(') === false) ? ('isset(' . $p . ')') : ('(' . $p . ' !== null )');
with
$pa[] = 'isset(' . $p . ')';
?

[pszalko]

Any update on this issue?

[nenetchi]

+1 for backticks substitution in array index

• PHP 7.0.33/7.3.1
• Smarty 3.1.33

Template

{if isset($foo["prefix_`$bar`"])}
1
{/if}

will generate

if ((($_smarty_tpl->tpl_vars['foo']->value["prefix_".((string)$_smarty_tpl->tpl_vars['bar']->value)] !== null ))) {?>
1
<?php }

with isset missing

[pszalko]

I believe this is similar issue to #499
and I hope the workaround from #499 (comment) will help.

Anyway, I hope to see it resolved soon.

[wisskid]

Duplicate of #453