Yesterday I found some people on my [favorite reddit][lolphp] wonder about the output of the following code:
<?php
$a = 1;
$c = $a + $a++;
Nikita Popov nikic
nikic
/ compress.php
Created
March 24, 2014 13:41
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| <?php | |
| use PhpParser\Node; | |
| $IN_DIR = __DIR__ . '/in_dir'; | |
| $OUT_FILE = __DIR__ . '/out_file.php'; | |
| require __DIR__ . '/../lib/bootstrap.php'; | |
| class CompressVisitor extends PhpParser\NodeVisitorAbstract { |
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| <?php | |
| error_reporting(E_ALL); | |
| require __DIR__ . '/FastRoute/src/bootstrap.php'; | |
| spl_autoload_register(function ($class) { | |
| require __DIR__ . '/Pux/src/' . strtr($class, '\\', '/') . '.php'; | |
| }); |
nikic
/ small_regex
Created
January 16, 2014 22:22
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| ~^(?|/a/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)|/b/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()|/c/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()|/d/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()|/e/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()|/f/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()()|/g/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()()()|/h/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()()()()|/i/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()()()()()|/j/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()()()()()()|/k/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()()()()()()()|/l/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)()()()()() |
nikic
/ no_foreach_lock.diff
Created
October 2, 2013 21:25
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| diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c | |
| index 25a604c..4dba71b 100644 | |
| --- a/Zend/zend_compile.c | |
| +++ b/Zend/zend_compile.c | |
| @@ -1737,7 +1737,6 @@ void zend_do_begin_function_declaration(znode *function_token, znode *function_n | |
| zend_op dummy_opline; | |
| dummy_opline.result_type = IS_UNUSED; | |
| - dummy_opline.op1_type = IS_UNUSED; | |
nikic
/ php_evaluation_order.md
Last active
October 19, 2021 05:47
Analysis of some weird evaluation order in PHP
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| diff --git a/Zend/zend_execute.c b/Zend/zend_execute.c | |
| index 63ecbe4..c79a551 100644 | |
| --- a/Zend/zend_execute.c | |
| +++ b/Zend/zend_execute.c | |
| @@ -94,7 +94,7 @@ static zend_always_inline void zend_pzval_unlock_free_func(zval *z TSRMLS_DC) | |
| } | |
| #undef zval_ptr_dtor | |
| -#define zval_ptr_dtor(pzv) i_zval_ptr_dtor(*(pzv) ZEND_FILE_LINE_CC) | |
| +#define zval_ptr_dtor(pzv) i_zval_ptr_dtor(*(pzv) ZEND_FILE_LINE_CC TSRMLS_CC) |
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| <?php | |
| $numElements = 10000000; | |
| // Test end() performance | |
| $array = [array_fill(0, $numElements, null)]; | |
| $startTime = microtime(true); | |
| $return = end($array); |
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| <?php error_reporting(E_ALL); | |
| function test() {} | |
| $nIter = 1000000; | |
| $argNums = [0, 1, 2, 3, 4, 5, 100]; | |
| $func = 'test'; | |
| foreach ($argNums as $argNum) { |
nikic
/ php.internals.notes.md
Created
May 11, 2013 11:41
PHP.net archives: http://news.php.net/php.internals (not searchable, no threads)
Markmail: http://markmail.org/search/?q=list%3Anet.php.lists.internals (usually a lot better)
This is only a summary. For a full list of changes see the NEWS file.
| Feature | RFC / announcement | Author |
|---|---|---|
| Bundled ZendOptimizer+ as OPcache | https://wiki.php.net/rfc/optimizerplus | zeev |