'PHP str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated

Dear all Iam getting this error on while run my app.

Here below i attached the image file for the code that shows error

{"data":[
    ["omron","<span class=\"label label-success\">Active<\/span>",
    "<button type=\"button\" class=\"btn btn-default\" onclick=\"editBrand(4)\" data-toggle=\"modal\" data-target=\"#editBrandModal\"><i class=\"fa fa-pencil\"><\/i><\/button> <button type=\"button\" class=\"btn btn-default\" onclick=\"removeBrand(4)\" data-toggle=\"modal\" data-target=\"#removeBrandModal\"><i class=\"fa fa-trash\"><\/i><\/button>\n\t\t\t\t"]
    ]
}
<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: 8192</p>
<p>Message:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated</p>
<p>Filename: core/Output.php</p>
<p>Line Number: 457</p>


    <p>Backtrace:</p>

UPDATE: Code

if ($this->parse_exec_vars === TRUE) 
{ 
    $memory = round(memory_get_usage() / 1024 / 1024, 2).'MB'; 
    // below is line 457
    $output = str_replace(array('{elapsed_time}', '{memory_usage}'), array($elapsed, $memory), $output); 
}

Onload Consition

enter image description here

phpcodeigniterphpmyadmin


Solution 1:[1]

This error message can show up if you have not loaded any views. Codeigniter's internal output buffer is never initialized thus being null. The output buffer is the third parameter to str_replace(). There might be other ways to trigger this error message.

You probably want to load a valid view, at some point.

PHP 7 and lower just would ignore the missing parameter, while PHP 8+ displays the warning. It may also vary with your environment / debug settings.

Solution 2:[2]

Use a ternary operator.

Before Codeigniter existing code:

$output = str_replace(array('{elapsed_time}', '{memory_usage}'), array($elapsed, $memory), $output);

Hopefully, it's will work fine.

After Use Ternary Operator:

$output = $output ? str_replace(array('{elapsed_time}', '{memory_usage}'), array($elapsed, $memory), $output): "";

Solution 3:[3]

I have had such an error

This is the only way to get rid of the error. That you PHP 7 & 8 install you'r System

php install in c/:xampp & c/:xampp2 installed. beacuse difrant drive in error occuerd

And

Benefit in other programs

Multiple xampp installations windows

Solution 4:[4]

Another option is to check $output in the existing if statement. That will skip the entire block of code that isn't needed when $output is NULL or empty.

if ($this->parse_exec_vars === TRUE && !empty($output)) 
{ 
    $memory = round(memory_get_usage() / 1024 / 1024, 2).'MB'; 
    // below is line 457
    $output = str_replace(array('{elapsed_time}', '{memory_usage}'), array($elapsed, $memory), $output); 
}

Solution 5:[5]

I Have downgraded my CI version to 3 and PHP verison to 7.3

Its working now

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Jahmic
Solution 2 Md.Jewel Mia
Solution 3
Solution 4 user2246924
Solution 5 Asarudin A

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