সাইটেশন নথি

APA (7 ম সংস্করণ) উদ্ধৃতি

Sandefur, J. Elementary Mathematical Modeling: A Dynamic Approach. Brooks Cole.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Sandefur, James. Elementary Mathematical Modeling: A Dynamic Approach. Pacific Grove, EUA: Brooks Cole.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Sandefur, James. Elementary Mathematical Modeling: A Dynamic Approach. Brooks Cole.

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Whoops! There was an error.

Whoops \ Exception \ ErrorException (E_WARNING)

fopen(/tmp/vufind_sessions/sess_u7okhsr74h6pfs09c8rvhi0hgv): Failed to open stream: No space left on device

Whoops\Exception\ErrorException thrown with message "fopen(/tmp/vufind_sessions/sess_u7okhsr74h6pfs09c8rvhi0hgv): 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:189 #2 VuFind\Session\AbstractBase:write in [internal]:0 #1 session_write_close in /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php:255 #0 Laminas\Session\SessionManager:writeClose in [internal]:0

Application frames (0) All frames (6)

5

Whoops\Exception\ErrorException

…/module/VuFind/src/VuFind/Session/File.php:159

4

fopen

…/module/VuFind/src/VuFind/Session/File.php:159

3

VuFind\Session\File saveSession

…/module/VuFind/src/VuFind/Session/AbstractBase.php:189

2

VuFind\Session\AbstractBase write

[internal]:0

1

session_write_close

…/vendor/laminas/laminas-session/src/SessionManager.php:255

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)) {
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                // 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);
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            fclose($handle);
            if ($return !== false) {
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        // If we got this far, something went wrong with the file output...
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Arguments

              "fopen(/tmp/vufind_sessions/sess_u7okhsr74h6pfs09c8rvhi0hgv): 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
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                $return = fwrite($handle, $data);
                // Make sure that there's no trailing data by truncating the file to
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                ftruncate($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();
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            $_SESSION = $storage->toArray(true);
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            $storage->fromArray($_SESSION);
            $storage->markImmutable();
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    /**
     * 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:

GET Data

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POST Data empty

Files empty

Cookies

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ui	"standard"
VUFIND_SESSION	"u7okhsr74h6pfs09c8rvhi0hgv"
language	"de"

Session

Key	Value
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SessionState	Laminas\Stdlib\ArrayObject {#958}
SessionHelper	Laminas\Stdlib\ArrayObject {#1404}

Server/Request Data

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REDIRECT_SCRIPT_URI	"https://opac.biblio.iteso.mx/vufind/Record/000154708/Cite"
REDIRECT_HTTPS	"on"
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_VUFIND_ENV	"development"
REDIRECT_SSL_TLS_SNI	"opac.biblio.iteso.mx"
REDIRECT_STATUS	"200"
SCRIPT_URL	"/vufind/Record/000154708/Cite"
SCRIPT_URI	"https://opac.biblio.iteso.mx/vufind/Record/000154708/Cite"
HTTPS	"on"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
VUFIND_ENV	"development"
SSL_TLS_SNI	"opac.biblio.iteso.mx"
SSL_SERVER_S_DN_C	"MX"
SSL_SERVER_S_DN_ST	"Jalisco"
SSL_SERVER_S_DN_L	"San Pedro Tlaquepaque"
SSL_SERVER_S_DN_O	"ITESO, A.C."
SSL_SERVER_S_DN_CN	"*.biblio.iteso.mx"
SSL_SERVER_I_DN_C	"US"
SSL_SERVER_I_DN_O	"DigiCert Inc"
SSL_SERVER_I_DN_CN	"DigiCert Global G2 TLS RSA SHA256 2020 CA1"
SSL_SERVER_SAN_DNS_0	"*.biblio.iteso.mx"
SSL_SERVER_SAN_DNS_1	"biblio.iteso.mx"
SSL_VERSION_INTERFACE	"mod_ssl/2.4.58"
SSL_VERSION_LIBRARY	"OpenSSL/3.0.13"
SSL_PROTOCOL	"TLSv1.3"
SSL_SECURE_RENEG	"true"
SSL_COMPRESS_METHOD	"NULL"
SSL_CIPHER	"TLS_AES_256_GCM_SHA384"
SSL_CIPHER_EXPORT	"false"
SSL_CIPHER_USEKEYSIZE	"256"
SSL_CIPHER_ALGKEYSIZE	"256"
SSL_CLIENT_VERIFY	"NONE"
SSL_SERVER_M_VERSION	"3"
SSL_SERVER_M_SERIAL	"0BC3A78C54193CE0888ED01213EB5B19"
SSL_SERVER_V_START	"Aug 15 00:00:00 2025 GMT"
SSL_SERVER_V_END	"Sep 8 23:59:59 2026 GMT"
SSL_SERVER_S_DN	"CN=*.biblio.iteso.mx,O=ITESO\, A.C.,L=San Pedro Tlaquepaque,ST=Jalisco,C=MX"
SSL_SERVER_I_DN	"CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=US"
SSL_SERVER_A_KEY	"rsaEncryption"
SSL_SERVER_A_SIG	"sha256WithRSAEncryption"
SSL_SESSION_ID	"bdb0b0cf89d2fcf716c3c7aa726874060017e3dd35ffd77e438b54140c8a4cf1"
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HTTP_COOKIE	"ui=standard; VUFIND_SESSION=u7okhsr74h6pfs09c8rvhi0hgv; language=de"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"opac.biblio.iteso.mx"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.58 (Ubuntu) Server at opac.biblio.iteso.mx Port 443</address>\n"
SERVER_SOFTWARE	"Apache/2.4.58 (Ubuntu)"
SERVER_NAME	"opac.biblio.iteso.mx"
SERVER_ADDR	"148.201.128.113"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.216.14"
DOCUMENT_ROOT	"/var/www/html"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	"/vufind"
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"webmaster@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"5308"
REDIRECT_URL	"/vufind/Record/000154708/Cite"
REDIRECT_QUERY_STRING	"lng=bn"
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	"lng=bn"
REQUEST_URI	"/vufind/Record/000154708/Cite?lng=bn"
SCRIPT_NAME	"/vufind/index.php"
PHP_SELF	"/vufind/index.php"
REQUEST_TIME_FLOAT	1775361216.5334
REQUEST_TIME	1775361216

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Cannot write session to /tmp/vufind_sessions/sess_u7okhsr74h6pfs09c8rvhi0hgv 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:255 #1 session_write_close in /usr/local/vufind/vendor/laminas/laminas-session/src/SessionManager.php:255 #0 Laminas\Session\SessionManager:writeClose in [internal]:0

Application frames (0) All frames (3)

2

Whoops\Exception\ErrorException

…/vendor/laminas/laminas-session/src/SessionManager.php:255

1

session_write_close

…/vendor/laminas/laminas-session/src/SessionManager.php:255

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

              "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
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        //
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            $_SESSION = $storage->toArray(true);
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            $storage->fromArray($_SESSION);
            $storage->markImmutable();
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    /**
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     *
     * If the session has already been started, or if the name provided fails
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    public function setName($name)
    {
        if ($this->sessionExists()) {
            throw new Exception\InvalidArgumentException(
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Open: [internal]

Environment & details:

GET Data

Key	Value
lng	"bn"

POST Data empty

Files empty

Cookies

Key	Value
ui	"standard"
VUFIND_SESSION	"u7okhsr74h6pfs09c8rvhi0hgv"
language	"de"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1775361216.5471 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "u7okhsr74h6pfs09c8rvhi0hgv" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#958}
SessionHelper	Laminas\Stdlib\ArrayObject {#1404}

Server/Request Data

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REDIRECT_SCRIPT_URI	"https://opac.biblio.iteso.mx/vufind/Record/000154708/Cite"
REDIRECT_HTTPS	"on"
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_VUFIND_ENV	"development"
REDIRECT_SSL_TLS_SNI	"opac.biblio.iteso.mx"
REDIRECT_STATUS	"200"
SCRIPT_URL	"/vufind/Record/000154708/Cite"
SCRIPT_URI	"https://opac.biblio.iteso.mx/vufind/Record/000154708/Cite"
HTTPS	"on"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
VUFIND_ENV	"development"
SSL_TLS_SNI	"opac.biblio.iteso.mx"
SSL_SERVER_S_DN_C	"MX"
SSL_SERVER_S_DN_ST	"Jalisco"
SSL_SERVER_S_DN_L	"San Pedro Tlaquepaque"
SSL_SERVER_S_DN_O	"ITESO, A.C."
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SSL_SERVER_I_DN_C	"US"
SSL_SERVER_I_DN_O	"DigiCert Inc"
SSL_SERVER_I_DN_CN	"DigiCert Global G2 TLS RSA SHA256 2020 CA1"
SSL_SERVER_SAN_DNS_0	"*.biblio.iteso.mx"
SSL_SERVER_SAN_DNS_1	"biblio.iteso.mx"
SSL_VERSION_INTERFACE	"mod_ssl/2.4.58"
SSL_VERSION_LIBRARY	"OpenSSL/3.0.13"
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SSL_SERVER_V_START	"Aug 15 00:00:00 2025 GMT"
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SSL_SERVER_S_DN	"CN=*.biblio.iteso.mx,O=ITESO\, A.C.,L=San Pedro Tlaquepaque,ST=Jalisco,C=MX"
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HTTP_ACCEPT	"/"
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SERVER_SOFTWARE	"Apache/2.4.58 (Ubuntu)"
SERVER_NAME	"opac.biblio.iteso.mx"
SERVER_ADDR	"148.201.128.113"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.216.14"
DOCUMENT_ROOT	"/var/www/html"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	"/vufind"
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
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SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"5308"
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REQUEST_METHOD	"GET"
QUERY_STRING	"lng=bn"
REQUEST_URI	"/vufind/Record/000154708/Cite?lng=bn"
SCRIPT_NAME	"/vufind/index.php"
PHP_SELF	"/vufind/index.php"
REQUEST_TIME_FLOAT	1775361216.5334
REQUEST_TIME	1775361216

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler