posix_fpathconf
PHP function
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(PHP 8 >= 8.3.0)
Returns the value of a configurable limit
Description
posix_fpathconf(resource|int $file_descriptor, int $name): int|false
Returns the value of a configurable limit from name for file_descriptor.
Parameters
nameThe name of the configurable limit, one of the following.
POSIX_PC_LINK_MAX,POSIX_PC_MAX_CANON,POSIX_PC_MAX_INPUT,POSIX_PC_NAME_MAX,POSIX_PC_PATH_MAX,POSIX_PC_PIPE_BUF,POSIX_PC_CHOWN_RESTRICTED,POSIX_PC_NO_TRUNC,POSIX_PC_ALLOC_SIZE_MIN,POSIX_PC_SYMLINK_MAX.
Return Values
Returns the configurable limit or false.
Errors/Exceptions
Throws a ValueError when resource is invalid.
Changelog
| Version | Description |
|---|---|
| 8.5.0 | Now sets last_error to EBADF and raises an E_WARNING when an invalid file descriptor is encountered. |
Examples
posix_fpathconf() example
This example will get the max path name's length in bytes for the current dir.
php
<?php
$fd = fopen(__DIR__, "r");
echo posix_fpathconf($fd, POSIX_PC_PATH_MAX);
?>The above example will output:
output
4096