oci_field_is_null

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

oci_field_is_null — Checks if a field in the currently fetched row is null

Açıklama

oci_field_is_null(resource $statement, string|int $column): bool

Checks if the given column from the current row of statement is null.

Bağımsız Değişkenler

statement: A valid OCI statement identifier.
column: Can be the field's index (1-based) or name.

Dönen Değerler

Returns true if column is null, false otherwise.

Örnekler

Örnek 1 oci_field_name() example

<?php

/ Create the table with:
/   CREATE TABLE mytab (c1 NUMBER);
/   INSERT INTO mytab VALUES (1);
/   INSERT INTO mytab VALUES (NULL);

$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$conn) {
    $m = oci_error();
    trigger_error(htmlentities($m['message']), E_USER_ERROR);
}

$stid = oci_parse($conn, "SELECT * FROM mytab");
oci_execute($stid);

while (($row = oci_fetch_array($stid, OCI_RETURN_NULLS)) != false) {
    $ncols = oci_num_fields($stid);
    for ($col = 1; $col <= $ncols; $col++) {
        var_dump(oci_field_is_null($stid, $col));
    }    
}

/ Outputs:
/    bool(false)
/    bool(true)

oci_free_statement($stid);
oci_close($conn);

?>

Found A Problem?

Learn How To Improve This Page • Submit a Pull Request • Report a Bug

＋add a note

User Contributed Notes 1 note

down

Raju Joseph [RajuJoseph at usa dot net] ¶

21 years ago

<?php



/ Connect to Oracle database.



/        Username  : Raju

/        Password  : Password

/        Database  : Database_name



  $conn=OCILogon("Raju", "Password", "DATABASE_NAME");

  if ( ! $conn ) {

    echo "Unable to connect: " . var_dump( OCIError() );

    die();

  }



/ Select Data...



/ DESC[RIBE] COMPANY

   

/   CompanyID          VARCHAR2(10)

/   CompanyName      VARCHAR2(30)

/   LastUserID           VARCHAR2(15)

/   LastDate              DATE

/



   

  $query = "SELECT * FROM Company";



  $result = OCIParse($conn, $query);

  OCIExecute($result, OCI_DEFAULT);



while (OCIFetchInto ($result, $row, OCI_ASSOC)) {



/ Usage of OCIcolumnisnull()

if (OCIcolumnisnull($result, 'CompanyName')) {



    print ( "<P>" . $row['CompanyID'] . "--->" . "Company Name NOT found !!  " . "<P>"  );

}

else {



    print ("<P>" . $row['CompanyID'] . "--->" . $row['CompanyName'] . "<P>"  );

}



/ Close connection from Oracle...



  OCILogoff($conn);

?>

＋add a note