PHP stream_isatty() Function
The PHP stream_isatty() function is used to check whether the specified stream is connected or associated with a terminal type device or not.
Syntax
stream_isatty(stream)
Parameters
stream |
Required. Specify the stream resource to check. |
Return Value
Returns true on success or false on failure.
Example: stream_isatty() example
The below command can be used to determine if a standard output / standard error stream is redirected to a file.
php -r "var_export(stream_isatty(STDERR));"
The output of the above command will be similar to:
true
php -r "var_export(stream_isatty(STDERR));" 2>output.txt
The output of the above command will be similar to:
false
❮ PHP Streams Reference
