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# fflush

(PHP 4 >= 4.0.1, PHP 5)

fflush -- Flushes the output to a file

## Description

bool fflush ( resource handle )

This function forces a write of all buffered output to the resource pointed to by the file handle handle. Returns `TRUE` on success or `FALSE` on failure.

The file pointer must be valid, and must point to a file successfully opened by fopen() or fsockopen() (and not yet closed by fclose()).

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