Your first course of action is to increase your memory limit. Note, this is a temporary debugging procedure. The goal is to increase the memory to a point where we have the application working again for the purpose of then reducing the memory usage. Once you decrease the memory usage you can lower the memory limit it to a value that's more suitable. Your plan should be to use as little memory as you could practically use where the application works and functions correctly in a production server based on the workload by your users (humans or programmatic). I usually recommend setting the memory limit to something high, like 1GB, assuming you have at least 150% of that free in RAM.
Also, never do these tests on a production server unless you're sure you have plenty of RAM and you fully understand how web server processes consume memory. You could easily bring a server to its knees if there are many concurrent processes running, each using a high amount of memory. I would never, ever recommend setting the memory limit to -1 (unlimited) in a production environment. That's a recipe for disaster. Don't make that newbie mistake.
So how do you do this? Simple - increase the memory limit programmatically early on in your code, before your process runs out of memory. If you do it this way, you can give PHP extra memory only when that piece of code gets called rather than increasing the memory limit for all PHP processes.
1 .
2. ini_set ('memory_limit', '1024M') ; // or you could use 1G
· If by increasing the memory limit you have gotten rid of the error and your code now works, you'll need to take measures to decrease that memory usage. Here are a few things you could do to decrease it:
· If you're reading files, read them line-by-line instead of reading in the complete file into memory. Look at fgets and SplFileObject::fgets.
· Upgrade to a new version of PHP if you're using PHP 5.3. PHP 5.4 and 5.5 use much less memory.
· Avoid loading large datasets into in an array. Instead, go for processing smaller subsets of the larger dataset and, if necessary, persist your data into a database to relieve memory use.
· Try the latest version or minor version of a third-party library (1.9.3 vs. your 1.8.2, for instance) and use whichever is more stable. Sometimes newer versions of libraries are written more efficiently.
· If you have an uncommon or unstable PHP extension, try upgrading it. It might have a memory leak.
· If you're dealing with large files and you simply can't read it line-by-line, try breaking the file into many smaller files and process those individually.
· Disable PHP extensions that you don't need.
· In the problem area, unset variables which contain large amounts of data and aren't required later in the code.
PHP Fatal error: Call to undefined function apply_filters() in G:\PleskVhosts\Example Domain\httpdocs\wp-includes\load.php on line 317
A fatal error in PHP occurs when the interpreter encounters a critical issue that prevents the script from continuing execution. This can happen due to reasons such as calling an undefined function, including a non-existent file, or running out of memory. When a fatal error occurs, PHP stops the script immediately and outputs an error message, which can help in diagnosing the problem. It's important to handle such errors properly to ensure a smooth user experience and maintain application stability.
array_column was not introduced into PHP until 5.5.0, so calling it in 5.3.4 would result in a fatal error, calling an undefined function.
what fatal error in linux
Parse error in PHP means that your script is invalid - it is not compliant with the programming language specification. After parse error script is no longer executed.
Permanent Fatal Error was created in 2002.
They're completely identical except how they output errors. Include produces a warning, while Require produces a fatal error.
fatal error can cause software to exit/crash. When OS get Fatal Error then you may get the BSOD (the blue screen with the error that caused the OS to crash).
The two functions are used to insert the content of a file into another PHP file before it is executed by the server. They are identical in every aspect, but they perform error handling in different ways. The include() function generates a warning (which does not halt execution) while the require() function generates a fatal error (which stops execution immediately).
Fatal System Error - book - was created in 2010.
Fatal System Error - book - has 304 pages.
The default error handling in PHP is simply an error message with a filename, line number, and a small message describing the error. This information however, can be invaluable to increasing the security potential of a website or business.