PDO exception error [database].semaphore doesnot exist
16153
PDOException when creating the table: Base table or view not found
84855
MySQL: "lock wait timeout exceeded"
52168
Reference — frequently asked questions about PDO
139049
PDO SQL-state "00000" but still error?
36828
PHP Apache crashes while executing a STORED PROCEDURE
84727
PDO support for multiple queries (PDO_MYSQL, PDO_MYSQLND)
61734
Problem with PDO MySQL
121475
SEDE thinks I'm running 2 queries at once
54232
PHP connection error with the database
148532
Get last insert id after a prepared insert with PDO
65657
How do I loop through a MySQL query via PDO in PHP?
121856
The result of a query cannot be enumerated more than once
1238
mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc... expects parameter 1 to be resource
152491
Warning: mysql_num_rows() expects parameter 1 to be resource, object given
59177
The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead
85849
Can I use a PDO prepared statement to bind an identifier (a table or field name) or a syntax keyword?
115313
Having trouble in sending the results from pdo to ajax