What are some potential factors that can cause delays when using the copy() function in PHP?

Potential factors that can cause delays when using the copy() function in PHP include large file sizes, slow network connections, and insufficient server resources. To mitigate these delays, it is recommended to optimize the code for efficiency, check for errors and handle them gracefully, and consider alternative methods for copying files if necessary. 

// Example code snippet demonstrating how to copy a file with error handling
$source = 'path/to/source/file.txt';
$destination = 'path/to/destination/file.txt';

if (copy($source, $destination)) {
    echo "File copied successfully.";
} else {
    echo "Error copying file.";
}

Keywords

copy function PHP delays file permissions file size

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