Finally I was able to repro the issue with the following two lines:
session_set_save_handler(new SessionHandler());
session_start();
When I do this, I get a WSOD! Any idea why this happens?
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Finally, I digged deeper and deeper and narrowed it down to the issue being caused because of failure in session_start(); Still, I do not know why it fails that way.
So, the problem boils down to:
When session_start() is called in NativeSessionStorage::start(), it fails. However, when I create a sample test page which just does session_start() it succeeds!
Does Silex do anything different?!
I am keeping the text below so that anyone facing similar issue understands the reason behind the failure.
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I have tried to switch from Php 5.3 to Php 5.4 recently and my website based on Silex stopped working with a WSOD.
I checked the PHP Error Logs and I see:
Premature end of script headers: php54.cgi
I tried doing a lot of stuff and finally thought of asking it online :(. Here's what I tried:
- Created a bare bones Silex project and checked if it is working. Nope, it wasn't.
Added code before Silex is initialized and set
app[debug] = trueafter:ini_set('display_errors', 1); error_reporting(-1); ErrorHandler::register(); if ('cli' !== php_sapi_name()) { ExceptionHandler::register(); }Tried to check the extent to which the code goes. But I was keeping on stepping in. I went till
NativeSessionStorage::start()and gave up, so it was working till then and any errors I generate there were being reported properly as expected.Tried looking at other entries for how to fix BSOD, but none of them really explained how things would have changed by moving from PHP 5.3 to PHP 5.4! That is ALL I did. Just changed the PHP version and PHP.INI accordingly. Below is the PHP.INI I use now.
; |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 [email protected] 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
I used the tools provided by the control panel of my hosting account to make the switch, so I am pretty sure it must be proper. I am able to run other PHP scripts.
Perhaps run 'strace' to see where PHP is failing. Perhaps you have permissions issues based on what user is trying to access certain resources. For example the directory where sessions are supposed to be saved.