PHP 7.4.0RC2 Released!

sapi_windows_vt100_support

(PHP 7 >= 7.2.0)

sapi_windows_vt100_supportGet or set VT100 support for the specified stream associated to an output buffer of a Windows console.

Descrição

sapi_windows_vt100_support ( resource $stream [, bool $enable ] ) : bool

If enable is omitted, the function returns TRUE if the stream stream has VT100 control codes enabled, FALSE otherwise.

If enable is specified, the function will try to enable or disable the VT100 features of the stream stream. If the feature has been successfully enabled (or disabled), the function will return TRUE, or FALSE otherwise.

At startup, PHP tries to enable the VT100 feature of the STDOUT/STDERR streams. By the way, if those streams are redirected to a file, the VT100 features may not be enabled.

If VT100 support is enabled, it is possible to use control sequences as they are known from the VT100 terminal. They allow the modification of the terminal's output. On Windows these sequences are called Console Virtual Terminal Sequences.

Aviso

This function uses the ENABLE_VIRTUAL_TERMINAL_PROCESSING flag implemented in the Windows 10 API, so the VT100 feature may not be available on older Windows versions.

Parâmetros

stream

The stream on which the function will operate.

enable

If specified, the VT100 feature will be enabled (if TRUE) or disabled (if FALSE).

Valor Retornado

If enable is not specified: returns TRUE if the VT100 feature is enabled, FALSE otherwise.

If enable is specified: Retorna TRUE em caso de sucesso ou FALSE em caso de falha.

Exemplos

Exemplo #1 sapi_windows_vt100_support() default state

By default, STDOUT and STDERR have the VT100 feature enabled.

php -r "var_export(sapi_windows_vt100_support(STDOUT));echo ' ';var_export(sapi_windows_vt100_support(STDERR));"

O exemplo acima irá imprimir algo similar à:

true true

By the way, if a stream is redirected, the VT100 feature will not be enabled:

php -r "var_export(sapi_windows_vt100_support(STDOUT));echo ' ';var_export(sapi_windows_vt100_support(STDERR));" 2>NUL

O exemplo acima irá imprimir algo similar à:


true false

Exemplo #2 sapi_windows_vt100_support() changing state

You won't be able to enable the VT100 feature of STDOUT or STDERR if the stream is redirected.

php -r "var_export(sapi_windows_vt100_support(STDOUT, true));echo ' ';var_export(sapi_windows_vt100_support(STDERR, true));" 2>NUL

O exemplo acima irá imprimir algo similar à:

true false

Exemplo #3 Example usage of VT100 support enabled

<?php
$out 
fopen('php://stdout','w');
fwrite($out'Just forgot a lettr.');
// Moves the cursor two characters backwards
fwrite($out"\033[2D");
// Inserts one blank, shifting existing text to the right -> Just forgot a lett r.
fwrite($out"\033[1@");
fwrite($out'e');
?>

O exemplo acima irá imprimir:

Just forgot a letter.
add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top