mysql_tablename

(PHP 4, PHP 5)

mysql_tablename — Get table name of field

Avviso

Questa enstensione deprecata da PHP 5.5.0, e sarà rimossa in futuro. Al suo posto, usare l'estensione MySQLi o PDO_MySQL. Vedere anche la guida MySQL: scelta dell'API e le FAQ relative per ulteriori informazioni. Le alternative a questa funzione includono:

SQL Query: SHOW TABLES

Descrizione

mysql_tablename(resource $result, int $i): string|false

Retrieves the table name from a result.

This function is deprecated. It is preferable to use mysql_query() to issue an SQL SHOW TABLES [FROM db_name] [LIKE 'pattern'] statement instead.

Elenco dei parametri

result: A result pointer resource that's returned from mysql_list_tables().
i: The integer index (row/table number)

Valori restituiti

The name of the table on success o false in caso di fallimento.

Use the mysql_tablename() function to traverse this result pointer, or any function for result tables, such as mysql_fetch_array().

Esempi

Example #1 mysql_tablename() example

<?php
mysql_connect("localhost", "mysql_user", "mysql_password");
$result = mysql_list_tables("mydb");
$num_rows = mysql_num_rows($result);
for ($i = 0; $i < $num_rows; $i++) {
    echo "Table: ", mysql_tablename($result, $i), "\n";
}

mysql_free_result($result);
?>

Note

Nota:
The mysql_num_rows() function may be used to determine the number of tables in the result pointer.

Vedere anche:

mysql_list_tables() - List tables in a MySQL database
mysql_field_table() - Get name of the table the specified field is in
mysql_db_name() - Retrieves database name from the call to mysql_list_dbs

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User Contributed Notes 2 notes

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Haseldow ¶

20 years ago


Another way to check if a table exists:

if(mysql_num_rows(mysql_query("SHOW TABLES LIKE '".$table."'"))==1) echo "Table exists";
else echo "Table does not exist";

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-15

pl at thinkmetrics dot com ¶

21 years ago


A simple function to check for the existance of a table:

function TableExists($tablename, $db) {
    
    // Get a list of tables contained within the database.
    $result = mysql_list_tables($db);
    $rcount = mysql_num_rows($result);

    // Check each in list for a match.
    for ($i=0;$i<$rcount;$i++) {
        if (mysql_tablename($result, $i)==$tablename) return true;
    }
    return false;
}

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