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Package php-mysql-layer
Short Description Simple PHP class for doing standard MySQL actions.
License MIT
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Informations about the package php-mysql-layer
Database.php
Database.php is a simple PHP class for doing standard MySQL actions, such as selecting, inserting, updating and deleting database rows. It also includes some nice functionality, like auto-escaping to protect your database from malicious code and automatic serializing of arrays.
Usage
Initiating
Initiate a database connection using by creating a new Database() object.
Select
Select rows from a database table
Usage:
Arguments:
- string
$table- name of the table to select from - array/string
$where- array or string holding the filters/'WHERE' clause for the query - int/string
$limit- integer or string holding the 'LIMIT' clause - string
$order- string holding the 'ORDER BY' clause - string
$where_mode- whether to add an 'AND' or 'OR' after each item in the$wherearray, defaults toAND - string
$select_fields- the fields to select (SELECT <$select_fields> FROM ...), defaults to*
Example:
Reading results
Reading the results can be done with the following functions:
-
$db->count()returns the number of selected rows, equal tomysql_num_rows() $db->row()returns the first row that matches the query as an array-
$db->result()returns all matches rows as an array containing row objects $db->result_array()returns all matches rows as an array containing row arrays$db->row_array()returns the first row that matches the query as an object (stdClass)
Please note that you can call any of these functions also directly after the $db->select() call, like shown below:
There are a few other methods available for queries that might come in handy:
$db->sql()returns the sql query that was last executed
Insert
Insert data into a database table
Usage:
Example:
Tip! You can call $db->id() immeadiately after a $db->insert() call to get the ID of the last inserted row.
Update
Update one or more rows of a database table
Usage:
If you need to set a value based on a formula, ex. {previousValue} + 1, end the field name with an exclamation mark (!), ex: 'amount!' => 'amount - 100'
Example:
Delete
Remove one or more rows from a database table
Usage:
Example:
Singleton
Access the database instance outside the global scope after initializing it
Usage:
Example:
