PHP Warning: htmlspecialchars() expects parameter 1 to be string, array given in

[daco65]

Buongiorno a tutti,
ho un problema con il file error.log, raggiunge grosse dimensioni in breve tempo a causa di questo errore che si ripete innumerevoli volte:

PHP Warning:  htmlspecialchars() expects parameter 1 to be string, array given in /home/svitllgj/public_html/var/cache/prod/smarty/compile/themecarlayouts_layout_left_column_tpl/9e/88/d1/9e88d15416b0c9d6392ff6615eb204b63e6ed6f4_2.file.product.tpl.php on line 291

Come posso risolvere il problema?

Ringrazio anticipatamente.

[El Patron]

howdy, maybe this solves, make sure to test this  on a test copy of your shop (best practice) before making production changes.

1. Locate the problematic variable
Open your theme’s templates/catalog/product.tpl (or your override) and search for the call to htmlspecialchars() around where the warning points (line 291 of the compiled file). This tells you which {$…} variable is being passed in as an array instead of a string.

2. Convert the array to a string in the template
Wrap the variable in a test/implode so only strings reach htmlspecialchars(). For example, replace:

{$myVar}

with:

{if is_array($myVar)} {$myVar|@implode:', '} {else} {$myVar} {/if}

—or— if you only need the first element:

{$myVar[0]|default:''}

 

 alternate solutions:

3. Or fix it at assignment time in PHP
If you prefer to handle it in your module or controller, do:

$value = is_array($rawValue) ? implode(', ', $rawValue) : $rawValue; $this->context->smarty->assign('myVar', $value);

4. Override, don’t edit core or cache files
Copy product.tpl to /themes/your_theme/templates/catalog/product.tpl, make your changes there, then clear the cache. Never edit var/cache or PrestaShop core files directly.

to finish up:

5. Clear Smarty cache & recompile
Delete /var/cache/prod/* (and /dev/* if used). PrestaShop will rebuild your templates without the old warning.

6. Verify the fix
Reload a product page and monitor error.log. The “array given” warning should be gone and your log file will stop growing uncontrollably.

[El Patron]

On 6/9/2025 at 6:33 AM, daco65 said:

Buongiorno a tutti,
ho un problema con il file error.log, raggiunge grosse dimensioni in breve tempo a causa di questo errore che si ripete innumerevoli volte:

PHP Warning:  htmlspecialchars() expects parameter 1 to be string, array given in /home/svitllgj/public_html/var/cache/prod/smarty/compile/themecarlayouts_layout_left_column_tpl/9e/88/d1/9e88d15416b0c9d6392ff6615eb204b63e6ed6f4_2.file.product.tpl.php on line 291

Come posso risolvere il problema?

Ringrazio anticipatamente.

@daco65

I forgot to mention easy solution, for line approx 291 suppress the php warning, prefix the php statement with a  @, see below for example.

// Without suppression, fopen will emit a warning if the file doesn't exist
$handle = fopen('nonexistent.txt', 'r');

// Suppressed: no warning is emitted, but $handle will be FALSE on failure
$handle = @fopen('nonexistent.txt', 'r');