posix_isatty
PHP function
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(PHP 4, PHP 5, PHP 7, PHP 8)
Determine if a file descriptor is an interactive terminal
Description
posix_isatty(resource|int $file_descriptor): bool
Determines if the file descriptor file_descriptor refers to a valid terminal type device.
Parameters
Return Values
Returns true if file_descriptor is an open descriptor connected to a terminal and false otherwise.
Changelog
| Version | Description |
|---|---|
| 8.5.0 | Now raises an E_WARNING when an invalid file_descriptor is encountered. |
| 8.4.0 | Set errno (error number) to EBADF when the file descriptor/stream passed is invalid. |
| 8.3.0 | Type error E_WARNINGs are now raised for integer coercions following the usual PHP type coercion semantics. |