Collections:
Quoting Text Values in MySQL
How To Quote Text Values in SQL Statements in MySQL?
✍: FYIcenter.com
Text values in SQL statements should be quoted with single quotes ('). If the text value contains a single quote ('), it should be protected by replacing it with two single quotes (''). In SQL language syntax, two single quotes represents one single quote in string literals. The tutorial exercise below shows you two INSERT statements. The first one will fail, because it has an un-protected single quote. The second one will be ok, because a str_replace() is used to replace (') with (''):
<?php include "mysql_connection.php"; $notes = "It's a search engine!"; $sql = "INSERT INTO fyi_links (id, url, notes) VALUES (" . " 201, 'www.google.com', '".$notes."')"; if (mysql_query($sql, $con)) { print(mysql_affected_rows() . " rows inserted.\n"); } else { print("SQL statement failed.\n"); } $notes = "It's another search engine!"; $notes = str_replace("'", "''", $notes); $sql = "INSERT INTO fyi_links (id, url, notes) VALUES (" . " 202, 'www.yahoo.com', '".$notes."')"; if (mysql_query($sql, $con)) { print(mysql_affected_rows() . " rows inserted.\n"); } else { print("SQL statement failed.\n"); } mysql_close($con); ?>
If you run this script, you will get something like this:
SQL statement failed. 1 rows inserted.
⇒ Quoting Date and Time Values in MySQL
⇐ Deleting Existing Rows in MySQL
2017-06-28, 1236👍, 0💬
Popular Posts:
Where to find answers to frequently asked questions on Using INSERT, UPDATE and DELETE Statements in...
What To Do If the StartDB.bat Failed to Start the XE Instance in Oracle? If StartDB.bat failed to st...
Where to find answers to frequently asked questions on Transaction Management: Commit or Rollback in...
How To Turn on mysql Extension on the PHP Engine in MySQL? The "mysql" API extension is provided as ...
How to change the data type of an existing column with "ALTER TABLE" statements in SQL Server? Somet...