60 lines
1.6 KiB
Markdown
60 lines
1.6 KiB
Markdown
# getch
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This simply uses the FFI extension to enable _getch and _ungetch in Windows and linux.
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[](https://code.bgemi.net/olive/PHP/getch/-/commits/1.x)
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[](https://code.bgemi.net/olive/PHP/getch/-/commits/1.x)
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[](https://code.bgemi.net/olive/PHP/getch/-/releases)
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```shell script
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$ composer require olivebbs/getch
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```
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```php
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use Olive\Console\Getch;
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$g = new Getch($linuxLibrary = null); // can also be a library that implements a function called _getch;
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// by default uses the bundled Resources/libgetch.so
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// on windows uses the built in _getch function.
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$ord = $g->getch();
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print \chr($ord);
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$ord = $g->ungetch('A');
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$res = $g->getch();
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$ord === $res // 65
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```
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Note that if you want to put a word into the STDIN stack, you need to do it in reverse.
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```php
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foreach(\str_split(\strrev('Hello World!')) as $char) {
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ungetch($char);
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}
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$result = '';
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do {
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$ord = getch();
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$result .= \chr($ord);
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} while($ord !== ord('!'));
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print $result; // Hello World!
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```
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There are also helper functions called getch() and ungetch();
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```php
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use function Olive\Console\getch;
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$ord = getch($linuxLibrary = null);
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print \chr($ord);
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$ord = ungetch('B');
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$res = getch();
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$ord === $res // 66
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```
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## Tests
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vendor/bin/phpunit |