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Its syntax is: int fopen (string file, string mode [, int use_include_path])
The mode specifies the read/write readiness of the file.
MODE MEANING
r Read only.
r+ Reading and writing.
w Write only.
w+ Reading and writing.
a Write only.
a+ Reading and writing.
If use_include_path is set to 1, file path is compared to the include path contained in the php.ini file.
<?
$file = "data.txt"; // some file
$fh = fopen($file, "a+") or die("File ($file) does not exist!");
?>
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