php if mysql result null

One way to do it is to check what mysql_num_rows returns. In php "empt...

One way to do it is to check what mysql_num_rows returns. In php "empty()" function is used to check if an array is empty i.e. if it has no data.

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Make sure that the value of the column is really NULL and not an empty with...

Make sure that the value of the column is really NULL and not an empty with numbers, I use this logic (if result is not greater than zero).

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You can use mysql_num_rows to check the number of your result set: you can ...

You can use mysql_num_rows to check the number of your result set: you can just replace if(!empty($res)) with mysql_num_rows like this -.

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php function table_sql_result($sql) { $str = ""; $result = mysql_...

php function table_sql_result($sql) { $str = ""; $result = mysql_query($sql); while ($row = mysql_fetch_assoc($result)) { if (!$keys).

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You get an array back (empty array if result is empty) so you can do sizeof...

You get an array back (empty array if result is empty) so you can do sizeof($array) or count($array) to check if you have 0 results or not.

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get a result row as an enumerated and associated array *! nullsafe! * * par...

get a result row as an enumerated and associated array *! nullsafe! * * parameter: $result * $result: valid db result id * * returns: array | false (mysql:if there are.

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Retrieves the contents of one cell from a MySQL result set. When working on...

Retrieves the contents of one cell from a MySQL result set. When working on If the column name has been aliased ('select foo as bar from '), use the alias.

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int mysql_affected_rows ([ resource $link_identifier = NULL ]). Get the num...

int mysql_affected_rows ([ resource $link_identifier = NULL ]). Get the number Returns the number of affected rows on success, and -1 if the last query failed.

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MySQL IF() takes three expressions and if the first expression is true, not...

MySQL IF() takes three expressions and if the first expression is true, not Online editors C, Java, PHP, Python, C Sharp are closed for maintenance and upgradation. In the following example the MySQL statement returns the third . Displaying customize text instead of NULL using MySQL IF function.

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The problem is that there are matches to my MySQL query, but the ($row php ...

The problem is that there are matches to my MySQL query, but the ($row php while ($row = mysql_fetch_assoc($result)) { if ($listing == 0).

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Comparison operations result in a value of 1 (TRUE), 0 (FALSE), or NULL. .....

Comparison operations result in a value of 1 (TRUE), 0 (FALSE), or NULL. .. Returns the first non- NULL value in the list, or NULL if there are no non- NULL values. . I use PHP with MySQL and was expecting similar behaviour out of its.

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how can i check if a mysql query in php has returned an empty set. I have a...

how can i check if a mysql query in php has returned an empty set. I have a page that requires two queries, but want to format it slightly.

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I am trying to check if my query returned any row of info. I tried BOOK: Be...

I am trying to check if my query returned any row of info. I tried BOOK: Beginning PHP 6, Apache, MySQL 6 Web Development ISBN: I guess this is because my $result isnt a empty variable- it contains an empty query.

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How can I make it so if a MySQL row is empty, then do? I tried this, but it...

How can I make it so if a MySQL row is empty, then do? I tried this, but it didn't work. $query //true (no results) do this } Uses: Jaunty J

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But when using ->get() how do you check if the result returned anything`...

But when using ->get() how do you check if the result returned anything`?. eg: As the collection returned by the query builder implements PHP's Countable.

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