最后我用下面两行重现了这个问题:

session_set_save_handler(new SessionHandler());
session_start();

当我这样做时，我得到了 WSOD!知道为什么会这样吗？

============================================= =============

最后，我越挖越深，将范围缩小到由于 session_start() 失败而导致的问题；不过，我不知道为什么会那样失败。

所以，问题归结为: 当在 NativeSessionStorage::start() 中调用 session_start() 时，它会失败。但是，当我创建一个仅执行 session_start() 的示例测试页时，它成功了!

Silex 有什么不同之处吗？!

我保留下面的文字，以便遇到类似问题的任何人都能理解失败背后的原因。

============================================= =============

我最近尝试从 Php 5.3 切换到 Php 5.4，但我基于 Silex 的网站停止使用 WSOD。

我检查了 PHP 错误日志，发现: 脚本头过早结束:php54.cgi

我尝试了很多东西，最后想到了在线询问 :(。以下是我的尝试:

1. 创建了一个简单的 Silex 项目并检查它是否正常工作。不，不是。

2. 在初始化 Silex 之前添加代码并在之后设置 app[debug] = true:

   ini_set('display_errors', 1);
   error_reporting(-1);
   ErrorHandler::register();
   if ('cli' !== php_sapi_name()) {
       ExceptionHandler::register();
   }
   

3. 尝试检查代码的运行范围。但我一直在介入。我一直走到 NativeSessionStorage::start() 并放弃，所以它一直工作到那时，我在那里生成的任何错误都按预期正确报告。

4. 尝试查看其他条目以了解如何修复蓝屏死机，但没有一个真正解释从 PHP 5.3 迁移到 PHP 5.4 会发生什么变化!这就是我所做的一切。只是相应地更改了 PHP 版本和 PHP.INI。下面是我现在使用的PHP.INI。

   ;                           |PIG v0.3.2.1|
   [PHP]
     open_basedir = 
     engine = 1
     zend.ze1_compatibility_mode = 
     short_open_tag = 1
     asp_tags = 
     precision = 14
     y2k_compliance = 1
     output_buffering = 4096
     zlib.output_compression = 
     implicit_flush = 
     unserialize_callback_func = 
     serialize_precision = 100
     allow_call_time_pass_reference = 
     safe_mode = 
     ; safe_mode_gid = 1
     safe_mode_include_dir = 
     safe_mode_exec_dir = 
     safe_mode_allowed_env_vars = "PHP_"
     safe_mode_protected_env_vars = "LD_LIBRARY_PATH"
     disable_functions = exec,passthru,shell_exec,system,proc_open,popen,show_source 
     disable_classes = 
     highlight.string = "#DD0000"
     highlight.comment = "#FF9900"
     highlight.keyword = "#007700"
     highlight.bg = "#FFFFFF"
     highlight.default = "#0000BB"
     highlight.html = "#000000"
     expose_php = 1
     max_execution_time = 30
     max_input_time = 60
     memory_limit = 128M
     error_reporting = 6135
     display_errors = 1
     display_startup_errors = 
     log_errors = 1
     log_errors_max_len = 1024
     ignore_repeated_errors = 
     ignore_repeated_source = 
     report_memleaks = 1
     track_errors = 
     html_errors = 
     error_log = "/hsphere/local/var/httpd/logs/php54_error.log"
     variables_order = EGPCS
     register_globals = 0
     ; register_long_arrays = 1
     register_argc_argv = 1
     auto_globals_jit = 1
     post_max_size = 30M
     ; magic_quotes_gpc = 1
     magic_quotes_runtime = 
     magic_quotes_sybase = 
     auto_prepend_file = 
     auto_append_file = 
     default_mimetype = "text/html"
     always_populate_raw_post_data = 1
   
   
   ;***** Added by go-pear
   include_path=".:/hsphere/shared/php54/include/php/PEAR"
   ;*****
   
     doc_root = 
     user_dir = 
     extension_dir = "/hsphere/shared/php54/lib/php/extensions/no-debug-non-zts-20100525/"
     cgi.fix_pathinfo = 1
     file_uploads = 1
     upload_tmp_dir = 
     upload_max_filesize = 25M
     allow_url_fopen = 1
     allow_url_include = 
     default_socket_timeout = 60
     auto_detect_line_endings = 1
   [Syslog]
     define_syslog_variables = 
   [mail function]
     sendmail_path = /usr/sbin/sendmail -t -i -fpostmaster@example.com
     mail.force_extra_parameters = 
   [SQL]
     sql.safe_mode = 
   [ODBC]
     odbc.allow_persistent = 
     odbc.check_persistent = 1
     odbc.max_persistent = "-1"
     odbc.max_links = "-1"
     odbc.defaultlrl = 4096
     odbc.defaultbinmode = 1
   [MySQL]
     mysql.allow_persistent = 
     mysql.max_persistent = "-1"
     mysql.max_links = "-1"
     mysql.default_port = 3306
     mysql.default_socket = "/var/lib/mysql/mysql.sock"
     mysql.default_host = localhost
     mysql.default_user = 
     mysql.default_password = 
     mysql.connect_timeout = 60
     mysql.trace_mode = 
   [MySQLi]
     mysqli.max_links = "-1"
     mysqli.default_port = 3306
     mysqli.default_socket = "/var/lib/mysql/mysql.sock"
     mysqli.default_host = localhost
     mysqli.default_user = 
     mysqli.default_pw = 
     mysqli.reconnect = 
   [PostgresSQL]
     pgsql.allow_persistent = 
     pgsql.auto_reset_persistent = 
     pgsql.max_persistent = "-1"
     pgsql.max_links = "-1"
     pgsql.ignore_notice = 0
     pgsql.log_notice = 0
   [dbx]
     dbx.colnames_case = lowercase
   [bcmath]
     bcmath.scale = 0
   [Session]
     session.save_handler = files
     session.save_path = "${US_ROOTF}/tmp"
     session.use_cookies = 1
     session.use_only_cookies = 1
     session.name = PHPSESSID
     session.auto_start = 0
     session.cookie_lifetime = 0
     session.cookie_path = /
     session.cookie_domain =
     session.cookie_httponly =
     session.serialize_handler = php
     session.gc_probability = 1
     session.gc_divisor = 1000
     session.gc_maxlifetime = 1440
     session.bug_compat_42 = Off
     session.bug_compat_warn = Off
     session.referer_check =
     session.cache_limiter = nocache
     session.cache_expire = 180
     session.use_trans_sid = 0
     session.hash_function = 0
     session.hash_bits_per_character = 5
     url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry"
   [Assertion]
     assert.active = 1
     assert.warning = 1
     assert.bail = 
     assert.callback = 0
     assert.quiet_eval = 0
   [Sockets]
     sockets.use_system_read = 1
   [mbstring]
     mbstring.language = Neutral
     mbstring.internal_encoding = "EUC-JP"
     mbstring.http_input = pass
     mbstring.http_output = pass
     mbstring.encoding_translation = 
     mbstring.detect_order = auto
     mbstring.substitute_character = 
     mbstring.func_overload = 0
   [exif]
     exif.encode_unicode = "ISO-8859-15"
     exif.decode_unicode_motorola = "UCS-2BE"
     exif.decode_unicode_intel = "UCS-2LE"
     exif.encode_jis = 
     exif.decode_jis_motorola = JIS
     exif.decode_jis_intel = JIS
   [soap]
     soap.wsdl_cache_enabled = 1
     soap.wsdl_cache_dir = "/tmp"
     soap.wsdl_cache_ttl = 86400
   [Zend]
   zend_extension="/hsphere/shared/php54/lib/php/extensions/ZendGuardLoader.so"
   ;  zend_extension_manager.optimizer = "/usr/local/Zend/lib/Optimizer-3.3.3"
   ;  zend_extension_manager.optimizer_ts = "/usr/local/Zend/lib/Optimizer_TS-3.3.3"
   ;  zend_optimizer.version = "3.3.3"
   ;  zend_extension = "/usr/local/Zend/lib/ZendExtensionManager.so"
   ;  zend_extension_ts = "/usr/local/Zend/lib/ZendExtensionManager_TS.so"
   [suhosin]
   ;  extension = suhosin.so
     suhosin.executor.include.max_traversal = 4
     suhosin.executor.disable_emodifier = 0
     suhosin.executor.include.whitelist = "http://,https://,file://,bfa://"
     suhosin.executor.allow_symlink = 0
     suhosin.mail.protect = 1
     suhosin.upload.disallow_elf = 1
     suhosin.log.syslog = 511
     suhosin.log.syslog.facility = 8
     suhosin.log.syslog.priority = 1
     suhosin.log.sapi = 511
     suhosin.session.encrypt = 0
     suhosin.cookie.cryptua = 0
     suhosin.session.cryptdocroot = 0
     suhosin.cookie.cryptdocroot = 0
     suhosin.executor.include.whitelist="phar"
     suhosin.get.max_value_length = 10240
   [curl]
   extension=curl.so
   [gmp]
   extension=gmp.so
   [iconv]
   extension=iconv.so
   [imap]
   extension=imap.so
   [mysqli]
   extension=mysqli.so
   [mysql]
   extension=mysql.so
   [odbc]
   extension=odbc.so
   [pdo]
   extension=pdo.so
   [pdo_mysql]
   extension=pdo_mysql.so
   [pdo_pgsql]
   extension=pdo_pgsql.so
   [pdo_sqlite]
   extension=pdo_sqlite.so
   [pgsql]
   extension=pgsql.so
   [sqlite3]
   extension=sqlite3.so
   [htscanner]
   extension=htscanner.so
   [mongo]
   extension=mongo.so
   [date]
   date.timezone=EST
   

我使用了我的主机账户控制面板提供的工具来进行切换，所以我很确定它一定是正确的。我能够运行其他 PHP 脚本。

最佳答案

我想我以前也遇到过同样的问题。如果您使用的 PHP 版本 < 5.4.11="" -="" sessionhandler="" 实现中存在错误="" -="" 检查此="">link出来，也许它有某种关系......

关于php - 由于 "session_start"，从 PHP 5.3 切换到 Php 5.4 时 Silex 出现白屏死机，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27159326/