PHP 5.6.0 released


(PHP 4, PHP 5)

mysql_errnoReturns the numerical value of the error message from previous MySQL operation


Suggested alternatives

Use of this extension is discouraged. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API for more information. Alternatives to this function include:


int mysql_errno ([ resource $link_identifier = NULL ] )

Returns the error number from the last MySQL function.

Errors coming back from the MySQL database backend no longer issue warnings. Instead, use mysql_errno() to retrieve the error code. Note that this function only returns the error code from the most recently executed MySQL function (not including mysql_error() and mysql_errno()), so if you want to use it, make sure you check the value before calling another MySQL function.



MySQL bağlantısı. Eğer bağlantı belirteci belirtilmemişse mysql_connect() tarafından açılan son bağlantı kullanılmaya çalışılır. Eğer böyle bir bağlantı yoksa mysql_connect() değiştirgesiz olarak çağrılmış gibi bir bağlantı oluşturmaya çalışır. Hiçbir bağlantı yoksa ve yenisi de kurulamazsa E_WARNING seviyesinde bir hata üretilir.

Dönen Değerler

Returns the error number from the last MySQL function, or 0 (zero) if no error occurred.


Örnek 1 mysql_errno() example


if (!
mysql_select_db("nonexistentdb"$link)) {
mysql_errno($link) . ": " mysql_error($link). "\n";

if (!
mysql_query("SELECT * FROM nonexistenttable"$link)) {
mysql_errno($link) . ": " mysql_error($link) . "\n";

Yukarıdaki örnek şuna benzer bir çıktı üretir:

1049: Unknown database 'nonexistentdb'
1146: Table 'kossu.nonexistenttable' doesn't exist

Ayrıca Bakınız

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User Contributed Notes 3 notes

simon at paarlberg dot dk
8 years ago
Function for creating unique md5 keys in a database. If there are duplets, then a new md5-key will be generated. For your use:

  function users_md5create($id){
    global $mysql_link;

    while ($done==0) {
      $md5key = md5(time().($id/2).$loop).md5(time().$id.$loop);
      $query = "INSERT INTO users_md5create SET md5key='$md5key', fkey='$id', created=UNIX_TIMESTAMP() ";
      $mysql_result = mysql_query($query, $mysql_link);
      if(mysql_errno($mysql_link)!=1062) $done=1;

apoio at cyberspace dot org
14 years ago
All mysqld error messages are located into the file /usr/local/share/mysql/english/errmsg.txt and listed in numerical order from 999 to 1175. You can change the output language as well, issuing the '-L spanish' option for example. See the manual for more details.
7 years ago
If you are receiving errors like:
Warning: mysql_close(): 5 is not a valid MySQL-Link resource

Check that you are calling mysql_error() and mysql_errno() BEFORE you call mysql_close().
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