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# fflush

(PHP 4 >= 4.0.1)

fflush -- Flushes the output to a file

## Description

int fflush ( int fp)

This function forces a write of all buffered output to the resource pointed to by the file handle `fp`. Returns `TRUE` if successful, `FALSE` otherwise.

The file pointer must be valid, and must point to a file successfully opened by fopen(), popen(), or fsockopen().

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