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I have a question about how PHP handles filesystem operations. I'm running this code that depends on a file being created before it gets used, and it feels like when I run the code it becomes a race condition - sometimes the it works, the file is created and php code uses it, sometimes it fails.
So I was wondering how php handles filesystem operations, does it send it off in the background or does it wait till the operation complete?
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PHP is single-threaded, which means that it executes one instruction at a time before moving on. In other words, PHP naturally waits for a function to finish executing before it continues with the next statement.
The file_put_contents() function in PHP is an inbuilt function which is used to write a string to a file. The file_put_contents() function checks for the file in which the user wants to write and if the file doesn't exist, it creates a new file.
php $target_Path = "images/"; $target_Path = $target_Path. basename( $_FILES['userFile']['name'] ); move_uploaded_file( $_FILES['userFile']['tmp_name'], $target_Path ); ?> when the file(image) is saved at the specified path... WHAT if i want to save the file with some desired name....
PHP Create File - fopen() The fopen() function is also used to create a file. Maybe a little confusing, but in PHP, a file is created using the same function used to open files. If you use fopen() on a file that does not exist, it will create it, given that the file is opened for writing (w) or appending (a).
file_put_contents is equivalent to fopen, fwrite, fclose. fclose should ensure the file is fully flushed to disk.
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