php8发布Alpha测试版，php8 Alpha新特性，下载php8 alpha最新版

2020年6月25日， php官方发布8.0.0 Alpha 1测试版， 供喜爱php的朋友进行使用测试， php-8.0.0alpha1测试版下载地址：https://downloads.php.net/~pollita/php-8.0.0alpha1.tar.gz 但是官方还不建议在生产环境中使用， 所以想要真正用上php8， 还要等官方发布正式的稳定版。 https://downloads.php.net/~pollita/

php8包括下面的新特性：

- Core: . Removed the pdo_odbc.db2_instance_name php.ini directive. (Kalle) . Fixed bug #77619 (Wrong reflection on MultipleIterator::__construct). (Fabien Villepinte) . Fixed bug #65274 (Enhance undefined class constant error with class name). (Nikita) . Fixed bug #49555 (Fatal error "Function must be a string" message should be renamed). (Nikita) . Fixed bug #70839 (Converting optional argument to variadic forbidden by LSP checks). (Nikita) . Fixed bug #69084 (Unclear error message when not implementing a renamed abstract trait function). (Nikita) . Fixed bug #62609 (Allow implementing Traversable on abstract classes). (Nikita) . Fixed bug #79462 (method_exists and property_exists incoherent behavior). (cmb) . Fixed bug #79368 ("Unexpected end of file" is not an acceptable error message). (Alex Dowad) . Fixed bug #36365 (scandir duplicates file name at every 65535th file). (cmb) . Use SSE2 instructions do locale independent strtolower. (Laruence) . Fixed bug #79521 (Check __set_state structure). (carusogabriel) . Fixed bug #79467 (data:// wrappers are writable). (cmb) . Implemented FR #47074 (phpinfo() reports "On" as 1 for the some extensions). (cmb) . Implemented FR #72089 (require() throws fatal error instead of exception). (Nikita) . Fixed bug #77966 (Cannot alias a method named "namespace"). (Nikita) - BZ2: . Fixed bug #71263 (fread() does not report bzip2.decompress errors). (cmb) - CURL: . Bumped required libcurl version to 7.29.0. (cmb) - Date: . Fixed bug #65547 (Default value for sunrise/sunset zenith still wrong). (cmb) . Fixed bug #69044 (discrepancy between time and microtime). (krakjoe) - DOM: . Add property DOMXPath::$registerNodeNamespaces and constructor argument that allow global flag to configure query() or evaluate() calls. - Enchant: . Add LIBENCHANT_VERSION macro . Deprecate enchant_broker_set_dict_path, enchant_broker_get_dict_path enchant_dict_add_to_personal and enchant_dict_is_in_session . Add enchant_dict_add and enchant_dict_is_added functions . Use libenchant-2 when available - FPM: . Fixed bug #64865 (Search for .user.ini files from script dir up to CONTEXT_DOCUMENT_ROOT). (Will Bender) - GD: . Fixed bug #55005 (imagepolygon num_points requirement). (cmb) . Replaced gd resources with objects. (Mark Randall) . Made the $num_points parameter of php_imagepolygon optional. (cmb) . Removed deprecated image2wbmp(). (cmb) . Removed deprecated png2wbmp() and jpeg2wbmp(). (cmb) . Added imagegetinterpolation(). (cmb) - Iconv: . Dropped support for iconv without proper errno setting. (cmb) - Intl: . Removed deprecated INTL_IDNA_VARIANT_2003. (cmb) - JIT: . Fixed bug #79582 (Crash seen when opcache.jit=1235 and opcache.jit_debug=2). (Laruence) . Fixed bug #77857 (Wrong result if executed with JIT). (Laruence) . Fixed bug #79255 (PHP cannot be compiled with enable JIT). (Laruence, Dmitry) - JSON: . The JSON extension is now an integral part of PHP and cannot be disabled as per RFC: https://wiki.php.net/rfc/always_enable_json (tandre) - LDAP: . Removed deprecated ldap_sort. (mcmic) - MBString: . Fixed bug #76999 (mb_regex_set_options() return current options). (cmb) . Removed the unused $is_hex parameter from mb_decode_numericentity(). (cmb) - MySQLi: . Fixed bug #76809 (SSL settings aren't respected when persistent connections are used). (fabiomsouto) - mysqlnd: . Fixed #60594 (mysqlnd exposes 160 lines of stats in phpinfo). (PeeHaa) - OpCache: . Fixed bug #78654 (Incorrectly computed opcache checksum on files with non-ascii characters). (mhagstrand) . Fixed bug #76535 (Opcache does not replay compile-time warnings). (Nikita) . Fixed bug #79665 (ini_get() and opcache_get_configuration() inconsistency). (cmb) - OpenSSL: . Added Cryptographic Message Syntax (CMS) support. (Eliot Lear) - PCRE: . Don't ignore invalid escape sequences. (sjon) - PGSQL: . Bumped required libpq version to 9.1. (cmb) - PDO: . Changed default PDO error mode to exceptions. (AllenJB) . Fixed bug #77849 (Disable cloning of PDO handle/connection objects). (camporter) - PDO_OCI: . Added support for setting and getting the oracle OCI 18c call timeout. (camporter) - PDO_PGSQL: . Bumped required libpq version to 9.1. (cmb) - phpdbg: . Fixed bug #76596 (phpdbg support for display_errors=stderr). (kabel) . Fixed bug #76801 (too many open files). (alekitto) . Fixed bug #77800 (phpdbg segfaults on listing some conditional breakpoints). (krakjoe) . Fixed bug #77805 (phpdbg build fails when readline is shared). (krakjoe) - Reflection: . Fixed bug #78697 (ReflectionClass::implementsInterface - inaccurate error message with traits). (villfa) . Implement ReflectionProperty::hasDefaultValue and Reflection::getDefaultValue (beberlei) . Fixed bug #64592 (ReflectionClass::getMethods() returns methods out of scope). (Nikita) . Fixed bug #77325 (ReflectionClassConstant::$class returns wrong class when extending). (Nikita) . Fixed bug #69180 (Reflection does not honor trait conflict resolution / method aliasing). (Nikita) . Fixed bug #74939 (Nested traits' aliased methods are lowercased). (Nikita) . Implement #79628 (Add $filter parameter for ReflectionClass::getConstants and ReflectionClass::getReflectionConstants) (carusogabriel) - Session: . Fixed bug #78624 (session_gc return value for user defined session handlers). (bshaffer) . Fixed bug #73529 (session_decode() silently fails on wrong input). (cmb) - SimpleXML: . Fixed bug #75245 (Don't set content of elements with only whitespaces). (eriklundin) . Fixed bug #63575 (Root elements are not properly cloned). (cmb) - sodium: . Fixed bug #77646 (sign_detached() strings not terminated). (Frank) - SQLite3: . Added SQLite3::setAuthorizer() and respective class constants. (bohwaz) - SPL: . Fixed bug #71236 (Second call of spl_autoload_register() does nothing if it has no arguments). (Nikita) . Fixed bug #65006 (spl_autoload_register fails with multiple callables using self, same method). (Nikita) - Standard: . Implemented FR #78638 (__PHP_Incomplete_Class should be final). (Laruence) . Fixed bug #77204 (getimagesize(): Read error! should mention file path). (peter279k) . Fixed bug #76859 (stream_get_line skips data if used with data-generating filter). (kkopachev) . Fixed bug #78385 (parse_url() does not include 'query' when question mark is the last char). (Islam Israfilov) . Fixed bug #75902 (str_replace should warn when misused with nested arrays). (Nikita) . Fixed bug #47983 (mixed LF and CRLF line endings in mail()). (cmb) . Made quoting of cmd execution functions consistent. (cmb) - tidy: . Removed the unused $use_include_path parameter from tidy_repair_string(). (cmb) - XML: . Fixed bug #76874 (xml_parser_free() should never leak memory). (Nikita) - XMLWriter: . Changed functions to accept/return XMLWriter objects instead of resources. (cmb) . Implemented FR #79344 (xmlwriter_write_attribute_ns: $prefix should be nullable). (cmb) - Zip: . Fixed bug #72374 (remove_path strips first char of filename). (tyage, Remi) . Add ZipArchive::setMtimeName and ZipArchive::setMtimeIndex methods. (Remi) . Add ZipArchive::setProgressCallback method (since libzip 1.3.0). (Remi) . Add ZipArchive::setCancelCallback method (since libzip 1.6.0). (Remi) . Add optional "flags" parameter to ZipArchive::addEmptyDir, addFile and addFromString methods. (Remi) . Add "flags" options to ZipArchive::addGlob and addPattern methods keeping previous behavior having FL_OVERWRITE by default. (Remi) . Add ZipArchive::replaceFile() method. (Remi) . Add lastId property to ZipArchive. (Remi) . ZipArchive::status and ZipArchive::statusSys properties and ZipArchive::getStatusString() method stay valid after the archive is closed. (Remi) . Fixed bug #50678 (files extracted by ZipArchive class lost their original modified time). (Remi) . Implemented FR #77960 (add compression / encryption options for ZipArchive::addGlob and ZipArchive::addPattern). (Remi) . Add ZipArchive::EM_UNKNOWN and ZipArchive::EM_TRAD_PKWARE constants. (Remi) . Add ZipArchive::isCompressionMethodSupported() and ZipArchive::isEncryptionMethodSupported() method (libzip 1.7.0). (Remi) - Zlib: . Fixed bug #71417 (fread() does not report zlib.inflate errors). (cmb) <<< NOTE: Insert NEWS from last stable release here prior to actual release! >>> 猛击这里， 观看子恒老师《php订单系统开发》系列视频 了解实现过程和下载相关源代码