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Bibliographic Details
Format: Recurso educativo Open Access
Language:en
Published: 1992
Subjects:
Concept Formation
Concept Teaching
Cooperative Learning
Educational Resources
Foreign Countries
Grade 10
High Schools
Integrated Activities
Integrated Curriculum
Interdisciplinary Approach
Learning Processes
Learning Theories
Library Research
Science and Society
Science Curriculum
Science Education
Science Instruction
Secondary School Science
Teaching Methods
Online Access:https://eric.ed.gov/?id=ED352258
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Whoops! There was an error.
Whoops \ Exception \ ErrorException (E_WARNING)
fopen(/tmp/vufind_sessions/sess_075e6dcd59add2b77738e429d73eb53e): Failed to open stream: No space left on device
Whoops\Exception\ErrorException thrown with message "fopen(/tmp/vufind_sessions/sess_075e6dcd59add2b77738e429d73eb53e): Failed to open stream: No space left on device" Stacktrace: #5 Whoops\Exception\ErrorException in /usr/local/vufind/module/VuFind/src/VuFind/Session/File.php:159 #4 fopen in /usr/local/vufind/module/VuFind/src/VuFind/Session/File.php:159 #3 VuFind\Session\File:saveSession in /usr/local/vufind/module/VuFind/src/VuFind/Session/AbstractBase.php:192 #2 VuFind\Session\AbstractBase:write in [internal]:0 #1 session_write_close in /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php:242 #0 Laminas\Session\SessionManager:writeClose in [internal]:0
Application frames (0) All frames (6)
5
Whoops\Exception\ErrorException
…/module/VuFind/src/VuFind/Session/File.php159
4
fopen
…/module/VuFind/src/VuFind/Session/File.php159
3
VuFind\Session\File saveSession
…/module/VuFind/src/VuFind/Session/AbstractBase.php192
2
VuFind\Session\AbstractBase write
[internal]0
1
session_write_close
…/vendor/laminas/laminas-session/src/SessionManager.php242
0
Laminas\Session\SessionManager writeClose
[internal]0
Open: /usr/local/vufind/module/VuFind/src/VuFind/Session/File.php
            if (filemtime($filename) + $maxlifetime < time()) {
                unlink($filename);
                $count++;
            }
        }
        return $count;
    }
 
    /**
     * A function that is called internally when session data is to be saved.
     *
     * @param string $sessId The current session ID
     * @param string $data   The session data to write
     *
     * @return bool
     */
    protected function saveSession($sessId, $data): bool
    {
        $sessFile = $this->path . '/sess_' . $sessId;
        if ($handle = fopen($sessFile, 'w')) {
            $return = false;
            // Lock the file for exclusive access to avoid issues with multiple
            // processes writing session simultaneously:
            if (flock($handle, LOCK_EX)) {
                $return = fwrite($handle, $data);
                // Make sure that there's no trailing data by truncating the file to
                // the correct length:
                ftruncate($handle, strlen($data));
                fflush($handle);
                flock($handle, LOCK_UN);
            }
            fclose($handle);
            if ($return !== false) {
                return true;
            }
        }
        // If we got this far, something went wrong with the file output...
        // It is tempting to throw an exception here, but this code is called
        // outside of the context of exception handling, so all we can do is
        // echo a message.
Arguments
  1. "fopen(/tmp/vufind_sessions/sess_075e6dcd59add2b77738e429d73eb53e): Failed to open stream: No space left on device"
    
Open: /usr/local/vufind/module/VuFind/src/VuFind/Session/File.php
            if (filemtime($filename) + $maxlifetime < time()) {
                unlink($filename);
                $count++;
            }
        }
        return $count;
    }
 
    /**
     * A function that is called internally when session data is to be saved.
     *
     * @param string $sessId The current session ID
     * @param string $data   The session data to write
     *
     * @return bool
     */
    protected function saveSession($sessId, $data): bool
    {
        $sessFile = $this->path . '/sess_' . $sessId;
        if ($handle = fopen($sessFile, 'w')) {
            $return = false;
            // Lock the file for exclusive access to avoid issues with multiple
            // processes writing session simultaneously:
            if (flock($handle, LOCK_EX)) {
                $return = fwrite($handle, $data);
                // Make sure that there's no trailing data by truncating the file to
                // the correct length:
                ftruncate($handle, strlen($data));
                fflush($handle);
                flock($handle, LOCK_UN);
            }
            fclose($handle);
            if ($return !== false) {
                return true;
            }
        }
        // If we got this far, something went wrong with the file output...
        // It is tempting to throw an exception here, but this code is called
        // outside of the context of exception handling, so all we can do is
        // echo a message.
Open: /usr/local/vufind/module/VuFind/src/VuFind/Session/AbstractBase.php
        // Anecdotal testing Today and Yesterday seems to indicate destroy()
        //   is called by the garbage collector and everything is good.
        // Something to keep in mind though.
        return 0;
    }
 
    /**
     * Write function that is called when session data is to be saved.
     *
     * @param string $sessId The current session ID
     * @param string $data   The session data to write
     *
     * @return bool
     */
    public function write($sessId, $data): bool
    {
        if ($this->writesDisabled) {
            return true;
        }
        return $this->saveSession($sessId, $data);
    }
 
    /**
     * A function that is called internally when session data is to be saved.
     *
     * @param string $sessId The current session ID
     * @param string $data   The session data to write
     *
     * @return bool
     */
    abstract protected function saveSession($sessId, $data): bool;
}
 
Open: [internal]
Open: /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php
     *
     * @return void
     */
    public function writeClose()
    {
        // The assumption is that we're using PHP's ext/session.
        // session_write_close() will actually overwrite $_SESSION with an
        // empty array on completion -- which leads to a mismatch between what
        // is in the storage object and $_SESSION. To get around this, we
        // temporarily reset $_SESSION to an array, and then re-link it to
        // the storage object.
        //
        // Additionally, while you _can_ write to $_SESSION following a
        // session_write_close() operation, no changes made to it will be
        // flushed to the session handler. As such, we now mark the storage
        // object isImmutable.
        $storage = $this->getStorage();
        if (! $storage->isImmutable()) {
            $_SESSION = $storage->toArray(true);
            session_write_close();
            $storage->fromArray($_SESSION);
            $storage->markImmutable();
        }
    }
 
    /**
     * Attempt to set the session name
     *
     * If the session has already been started, or if the name provided fails
     * validation, an exception will be raised.
     *
     * @param  string $name
     * @return SessionManager
     * @throws Exception\InvalidArgumentException
     */
    public function setName($name)
    {
        if ($this->sessionExists()) {
            throw new Exception\InvalidArgumentException(
                'Cannot set session name after a session has already started'
Open: [internal]

Environment & details:

empty
empty
empty
Key Value
language
"en"
ui
"standard"
VUFIND_SESSION
"075e6dcd59add2b77738e429d73eb53e"
Key Value
__Laminas
array:2 [
  "_REQUEST_ACCESS_TIME" => 1784779080.9435
  "_VALID" => array:1 [
    "Laminas\Session\Validator\Id" => "075e6dcd59add2b77738e429d73eb53e"
  ]
]
SessionState
Laminas\Stdlib\ArrayObject {#938}
FlashMessenger
Laminas\Stdlib\ArrayObject {#1583}
SessionHelper
Laminas\Stdlib\ArrayObject {#1834}
Key Value
REDIRECT_VUFIND_LOCAL_DIR
"/usr/local/vufind/local"
REDIRECT_HTTPS
"on"
REDIRECT_SSL_TLS_SNI
"info.umar.mx"
REDIRECT_STATUS
"200"
VUFIND_LOCAL_DIR
"/usr/local/vufind/local"
HTTPS
"on"
SSL_TLS_SNI
"info.umar.mx"
HTTP_ACCEPT
"*/*"
HTTP_USER_AGENT
"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE
"language=en; ui=standard; VUFIND_SESSION=075e6dcd59add2b77738e429d73eb53e"
HTTP_ACCEPT_ENCODING
"gzip, br, zstd, deflate"
HTTP_HOST
"info.umar.mx"
PATH
"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE
"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE
"Apache/2.4.66 (Ubuntu)"
SERVER_NAME
"info.umar.mx"
SERVER_ADDR
"200.23.222.19"
SERVER_PORT
"443"
REMOTE_ADDR
"216.73.217.169"
DOCUMENT_ROOT
"/usr/local/vufind/public"
REQUEST_SCHEME
"https"
CONTEXT_PREFIX
""
CONTEXT_DOCUMENT_ROOT
"/usr/local/vufind/public"
SERVER_ADMIN
"admin@localhost"
SCRIPT_FILENAME
"/usr/local/vufind/public/index.php"
REMOTE_PORT
"30802"
REDIRECT_URL
"/Record/eric_ED352258/UserComments"
GATEWAY_INTERFACE
"CGI/1.1"
SERVER_PROTOCOL
"HTTP/1.1"
REQUEST_METHOD
"GET"
QUERY_STRING
""
REQUEST_URI
"/Record/eric_ED352258/UserComments"
SCRIPT_NAME
"/index.php"
PHP_SELF
"/index.php"
REQUEST_TIME_FLOAT
1784779080.9393
REQUEST_TIME
1784779080
empty
0. Whoops\Handler\PrettyPageHandler
Cannot write session to /tmp/vufind_sessions/sess_075e6dcd59add2b77738e429d73eb53e Whoops! There was an error.
Whoops \ Exception \ ErrorException (E_WARNING)
session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions, handler: VuFind\Session\File::write)
Whoops\Exception\ErrorException thrown with message "session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions, handler: VuFind\Session\File::write)" Stacktrace: #2 Whoops\Exception\ErrorException in /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php:242 #1 session_write_close in /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php:242 #0 Laminas\Session\SessionManager:writeClose in [internal]:0
Application frames (0) All frames (3)
2
Whoops\Exception\ErrorException
…/vendor/laminas/laminas-session/src/SessionManager.php242
1
session_write_close
…/vendor/laminas/laminas-session/src/SessionManager.php242
0
Laminas\Session\SessionManager writeClose
[internal]0
Open: /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php
     *
     * @return void
     */
    public function writeClose()
    {
        // The assumption is that we're using PHP's ext/session.
        // session_write_close() will actually overwrite $_SESSION with an
        // empty array on completion -- which leads to a mismatch between what
        // is in the storage object and $_SESSION. To get around this, we
        // temporarily reset $_SESSION to an array, and then re-link it to
        // the storage object.
        //
        // Additionally, while you _can_ write to $_SESSION following a
        // session_write_close() operation, no changes made to it will be
        // flushed to the session handler. As such, we now mark the storage
        // object isImmutable.
        $storage = $this->getStorage();
        if (! $storage->isImmutable()) {
            $_SESSION = $storage->toArray(true);
            session_write_close();
            $storage->fromArray($_SESSION);
            $storage->markImmutable();
        }
    }
 
    /**
     * Attempt to set the session name
     *
     * If the session has already been started, or if the name provided fails
     * validation, an exception will be raised.
     *
     * @param  string $name
     * @return SessionManager
     * @throws Exception\InvalidArgumentException
     */
    public function setName($name)
    {
        if ($this->sessionExists()) {
            throw new Exception\InvalidArgumentException(
                'Cannot set session name after a session has already started'
Arguments
  1. "session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions, handler: VuFind\Session\File::write)"
    
Open: /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php
     *
     * @return void
     */
    public function writeClose()
    {
        // The assumption is that we're using PHP's ext/session.
        // session_write_close() will actually overwrite $_SESSION with an
        // empty array on completion -- which leads to a mismatch between what
        // is in the storage object and $_SESSION. To get around this, we
        // temporarily reset $_SESSION to an array, and then re-link it to
        // the storage object.
        //
        // Additionally, while you _can_ write to $_SESSION following a
        // session_write_close() operation, no changes made to it will be
        // flushed to the session handler. As such, we now mark the storage
        // object isImmutable.
        $storage = $this->getStorage();
        if (! $storage->isImmutable()) {
            $_SESSION = $storage->toArray(true);
            session_write_close();
            $storage->fromArray($_SESSION);
            $storage->markImmutable();
        }
    }
 
    /**
     * Attempt to set the session name
     *
     * If the session has already been started, or if the name provided fails
     * validation, an exception will be raised.
     *
     * @param  string $name
     * @return SessionManager
     * @throws Exception\InvalidArgumentException
     */
    public function setName($name)
    {
        if ($this->sessionExists()) {
            throw new Exception\InvalidArgumentException(
                'Cannot set session name after a session has already started'
Open: [internal]

Environment & details:

empty
empty
empty
Key Value
language
"en"
ui
"standard"
VUFIND_SESSION
"075e6dcd59add2b77738e429d73eb53e"
Key Value
__Laminas
array:2 [
  "_REQUEST_ACCESS_TIME" => 1784779080.9435
  "_VALID" => array:1 [
    "Laminas\Session\Validator\Id" => "075e6dcd59add2b77738e429d73eb53e"
  ]
]
SessionState
Laminas\Stdlib\ArrayObject {#938}
FlashMessenger
Laminas\Stdlib\ArrayObject {#1583}
SessionHelper
Laminas\Stdlib\ArrayObject {#1834}
Key Value
REDIRECT_VUFIND_LOCAL_DIR
"/usr/local/vufind/local"
REDIRECT_HTTPS
"on"
REDIRECT_SSL_TLS_SNI
"info.umar.mx"
REDIRECT_STATUS
"200"
VUFIND_LOCAL_DIR
"/usr/local/vufind/local"
HTTPS
"on"
SSL_TLS_SNI
"info.umar.mx"
HTTP_ACCEPT
"*/*"
HTTP_USER_AGENT
"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE
"language=en; ui=standard; VUFIND_SESSION=075e6dcd59add2b77738e429d73eb53e"
HTTP_ACCEPT_ENCODING
"gzip, br, zstd, deflate"
HTTP_HOST
"info.umar.mx"
PATH
"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE
"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE
"Apache/2.4.66 (Ubuntu)"
SERVER_NAME
"info.umar.mx"
SERVER_ADDR
"200.23.222.19"
SERVER_PORT
"443"
REMOTE_ADDR
"216.73.217.169"
DOCUMENT_ROOT
"/usr/local/vufind/public"
REQUEST_SCHEME
"https"
CONTEXT_PREFIX
""
CONTEXT_DOCUMENT_ROOT
"/usr/local/vufind/public"
SERVER_ADMIN
"admin@localhost"
SCRIPT_FILENAME
"/usr/local/vufind/public/index.php"
REMOTE_PORT
"30802"
REDIRECT_URL
"/Record/eric_ED352258/UserComments"
GATEWAY_INTERFACE
"CGI/1.1"
SERVER_PROTOCOL
"HTTP/1.1"
REQUEST_METHOD
"GET"
QUERY_STRING
""
REQUEST_URI
"/Record/eric_ED352258/UserComments"
SCRIPT_NAME
"/index.php"
PHP_SELF
"/index.php"
REQUEST_TIME_FLOAT
1784779080.9393
REQUEST_TIME
1784779080
empty
0. Whoops\Handler\PrettyPageHandler