The file pointer must be valid, and must point to
a file successfully opened by fopen() or
fsockopen() (and not yet closed by
fclose()).
length
Reading ends when length
- 1 bytes have been
read, on a newline (which is included in the return value), or on EOF
(whichever comes first). If no length is specified, it will keep
reading from the stream until it reaches the end of the line.
Note:
Until PHP 4.3.0, omitting it would assume 1024 as the line length.
If the majority of the lines in the file are all larger than 8KB,
it is more resource efficient for your script to specify the maximum
line length.
Return Values
Returns a string of up to length
- 1 bytes read from
the file pointed to by handle
.
Note: If PHP is not properly recognizing
the line endings when reading files either on or created by a Macintosh
computer, enabling the
auto_detect_line_endings
run-time configuration option may help resolve the problem.
Note:
People used to the 'C' semantics of fgets()
should note the difference in how EOF is returned.
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