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PHP copy() | Copy Content of One File into Another
The PHP copy() function is used when we need to copy the content of one file to another. For example:
<?php
copy("codes.txt", "cracker.txt");
?>
The content of codes.txt file gets copied into cracker.txt file. If cracker.txt file already contains some content, then it will get overwritten.
Note - The copy() function returns true on success and false on failure. For example:
<?php
$source_file = "codes.txt";
$target_file = "cracker.txt";
if(copy($source_file, $target_file))
echo "The content of $source_file is copied to $target_file";
else
echo "Unable to copy";
?>
PHP copy() Function Syntax
The syntax of copy() function in PHP, is:
copy(source, destination, context)
The third or last (context) parameter is optional, used to specify a context resource, created using the stream_context_create() function.
PHP Copy Content of One File to Another
<?php
$source_file = "one.txt";
$target_file = "two.txt";
echo "<h1>Before Copy</h1>";
echo "<p>---$source_file---</p>";
$x = fopen($source_file, "r") or die("Unable to Open the File, $source_file");
echo fread($x, filesize($source_file));
fclose($x);
echo "<p>---$target_file---</p>";
$x = fopen($target_file, "r") or die("Unable to Open the File, $target_file");
echo fread($x, filesize($target_file));
fclose($x);
if(copy($source_file, $target_file))
{
echo "<h1>After Copy</h1>";
echo "<p>---$source_file---</p>";
$x = fopen($source_file, "r") or die("Unable to Open the File, $source_file");
echo fread($x, filesize($source_file));
fclose($x);
echo "<p>---$target_file---</p>";
$x = fopen($target_file, "r") or die("Unable to Open the File, $target_file");
echo fread($x, filesize($target_file));
fclose($x);
}
else
echo "<p>Unable to copy</p>";
?>
The output of above PHP example, is:
Note - The fopen() opens a file.
Note - The fclose() closes a file.
Note - The fread() is used to read the content of an opened file, using its pointer.
Note - The filesize() returns the size of specified file in bytes.
If you simplify above PHP example, then it would be similar to:
<?php
$source_file = "one.txt";
$target_file = "two.txt";
if(copy($source_file, $target_file))
echo "<p>File copied successfully!</p>";
else
echo "<p>Unable to copy</p>";
?>
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