First experience using php8's extended arginfo generation tool

php8 provides a very convenient tool for generating extension function or class parameter information.

You only need to maintain a copy of xyz.stub.php, and you can use tools to generate xyz_arginfo.h.

There is no doubt that this method lowers the threshold for the development and extension of phper and makes it easier to maintain.

Get started experience:

Generate extended skeleton.

cd ext
php ext_skel.php --ext test

Add a function and change test.stub.php.

<?php

/** @generate-function-entries */

function test1(): void {}

function test2(string $str = ""): string {}

function test3(int $integer = 123): int {}

Regenerate test_arginfo.h.

                 

php ../../build/gen_stub.php test.stub.php

Related commits can be clicked here (https://github.com/php/php-src/compare/master...nikic:php-stubs )

Write a simple extension example to implement the all and any functions in python through PHP extension.

Preparation.

• Download the latest source code of php
• Already installed php

Generate the extended skeleton.

cd ext
php ext_skel.php --ext python

Write the function prototype and edit python.stub.php.

<?php

/** @generate-function-entries */

function all(array $arr): bool {}

function any(array $arr): bool {}

Generate python_arginfo.h based on python.stub.php.

php ../../build/gen_stub.php python.stub.php

To implement function logic, edit python.c.

PHP_FUNCTION(all)
{
    zval *input;
    zval *item;
    int result = 1, item_result = 1;
    HashTable *htbl;

    ZEND_PARSE_PARAMETERS_START(1, 1)
        Z_PARAM_ARRAY(input)
    ZEND_PARSE_PARAMETERS_END();

    htbl = Z_ARRVAL_P(input);

    ZEND_HASH_FOREACH_VAL(htbl, item) {
        item_result = zend_is_true(item);
        result &= item_result;
    } ZEND_HASH_FOREACH_END();

    RETURN_BOOL(result);
}

/* {{{ void any() */
PHP_FUNCTION(any)
{
    zval *input;
    zval *item;
    int result = 0, item_result = 0;
    HashTable *htbl;

    ZEND_PARSE_PARAMETERS_START(1, 1)
        Z_PARAM_ARRAY(input)
    ZEND_PARSE_PARAMETERS_END();

    htbl = Z_ARRVAL_P(input);

    ZEND_HASH_FOREACH_VAL(htbl, item) {
        item_result = zend_is_true(item);
        result |= item_result;
    } ZEND_HASH_FOREACH_END();

    RETURN_BOOL(result);
}

Write unit tests, edit 002.phpt and 003.phpt, create new 004.phpt and 005.phpt.

--TEST--
Check all function true case
--SKIPIF--
<?php
if (!extension_loaded(&#39;python&#39;)) {
    echo &#39;skip&#39;;
}
?>
--FILE--
<?php
var_dump(all([]));
var_dump(all([1]));
var_dump(all([-1, 1, &#39;1&#39;]));
?>
--EXPECT--
bool(true)
bool(true)
bool(true)

--TEST--
Check all function false case
--SKIPIF--
<?php
if (!extension_loaded(&#39;python&#39;)) {
    echo &#39;skip&#39;;
}
?>
--FILE--
<?php
var_dump(all([&#39;0&#39;]));
var_dump(all([0]));
var_dump(all([&#39;&#39;]));
var_dump(all([false]));
var_dump(all([1, -1, 100, false]));
var_dump(all([0, -1, 100, 1]));
var_dump(all([&#39;1&#39;, -1, &#39;&#39;, 100, 1]));
?>
--EXPECT--
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)

--TEST--
Check any function true case
--SKIPIF--
<?php if (!extension_loaded(&#39;python&#39;)) {
    echo &#39;skip&#39;;
}
?>
--FILE--
<?php var_dump(any([&#39;a&#39;, &#39;b&#39;, &#39;c&#39;, &#39;d&#39;]));
var_dump(any([[&#39;a&#39;, &#39;b&#39;, &#39;&#39;, &#39;d&#39;]]));
var_dump(any([[&#39;&#39;, &#39;b&#39;, &#39;c&#39;, &#39;d&#39;]]));
var_dump(any([[&#39;a&#39;, &#39;b&#39;, &#39;c&#39;, &#39;&#39;]]));
?>
--EXPECT--
bool(true)
bool(true)
bool(true)
bool(true)

--TEST--
Check all function false case
--SKIPIF--
<?php if (!extension_loaded(&#39;python&#39;)) {
    echo &#39;skip&#39;;
}
?>
--FILE--
<?php var_dump(any([&#39;0&#39;]));
var_dump(any([0]));
var_dump(any([&#39;&#39;]));
var_dump(any([false]));
var_dump(any([0, &#39;0&#39;, &#39;&#39;, false]));
?>
--EXPECT--
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)

Compile, test and install

./configure && make
make test
sudo make install

Add to php.ini

php -i | grep ini # 定位你的php.ini文件

Join

extension=python.so

Check if successful

php -m | grep python

Actual test

php -r "var_dump(all([]));“
php -r "var_dump(any([]));"

PHP8 has added a lot of useful macros and features.

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