134 lines
3.9 KiB
PHP
134 lines
3.9 KiB
PHP
<?php
|
|
/* This file is free software: you can redistribute it and/or modify
|
|
it under the terms of version 3 of the GNU Affero General Public License as published by the Free Software Foundation.
|
|
|
|
This file is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details. */
|
|
|
|
|
|
// -------------------------------------
|
|
// connection setup
|
|
// create the dsn from values in /config.php
|
|
$dsn = $GLOBALS['db_type'] . ":"
|
|
. $GLOBALS['db_host']
|
|
. $GLOBALS['db_port']
|
|
. $GLOBALS['db_socket']
|
|
. $GLOBALS['db_name']
|
|
. "charset=utf8mb4";
|
|
|
|
|
|
$pdo = (new PDO($dsn, $GLOBALS['db_user'], $GLOBALS['db_pass'],
|
|
$GLOBALS['db_args']));
|
|
|
|
|
|
// -------------------------------------
|
|
// table setup
|
|
// create needed tables, if nonexistant
|
|
if (!db_table_existant("lusers")) {
|
|
db_create_table("lusers",
|
|
array("id int primary key","username varchar(20)",
|
|
"biography longtext","email varchar(50)","website varchar(50)",
|
|
"password_hash varchar(80)","full_name varchar(50)",
|
|
"login varchar(20)")); }
|
|
|
|
if (!db_table_existant("posts")) {
|
|
db_create_table("posts",
|
|
array("id int primary key","title varchar(200)","date datetime",
|
|
"user int","text longtext")); }
|
|
|
|
if (!db_table_existant("comments")) {
|
|
db_create_table("comments",
|
|
array("id int primary key","displayname varchar(20)",
|
|
"user int","text longtext", "date datetime")); }
|
|
|
|
|
|
|
|
// -------------------------------------
|
|
|
|
// STRING --> ARRAY
|
|
// Execute a DB command
|
|
function db_cmd($query) {
|
|
$stmt = $GLOBALS['pdo']->query($query);
|
|
if (is_bool($stmt)) {
|
|
return $stmt;
|
|
} else {
|
|
return $stmt->fetch();
|
|
}
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
// STRING STRING --> ARRAY
|
|
// Return all values of a specific column
|
|
function db_get_columns($table, $column) {
|
|
return db_cmd("select " . $column . " from " . $table);
|
|
}
|
|
|
|
// STRING STRING VARYING --> ARRAY
|
|
// Return all rows that have an 'identifier' column set to given value
|
|
function db_get_rows($table, $identifier, $value) {
|
|
return db_cmd("select * from " . $table . " where " . $identifier .
|
|
" = " . $value . ";");
|
|
}
|
|
|
|
// STRING STRING VARYING STRING --> ARRAY
|
|
// Return the value of a specific column in a given row, identified by an
|
|
// 'identifier' column set to the given value
|
|
function db_get_cell($table, $identifier, $value, $cell) {
|
|
return db_get_rows($table, $identifier, $value)[$cell];
|
|
}
|
|
|
|
// --------------------------------------
|
|
|
|
// STRING STRING VARYING STRING VARYING --> NIL
|
|
// Edit the value of a cell
|
|
function db_set_cell($table, $identifier, $value, $cell, $new_value) {
|
|
if (is_string($value)) { $value = "'" . $value . "'"; }
|
|
if (is_string($new_value)) { $new_value = "'" . $new_value . "'"; }
|
|
|
|
return db_cmd("update " . $table
|
|
. " set " . $cell . " = " . $new_value
|
|
. " where " . $identifier . " = " . $value) . ";";
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
// STRING ARRAY ARRAY --> BOOLEAN
|
|
// Create a table with given values to given columns.
|
|
// First array is a list of columns (as would be provided to SQL), and the
|
|
// second is the list of values (as would follow " values " in SQL)
|
|
function db_insert_row($table, $variables, $values) {
|
|
$variables = comma_sep($variables);
|
|
$values = comma_sep(strings_wrap($values));
|
|
|
|
|
|
return db_cmd("insert into " . $table
|
|
. " (". $variables .")"
|
|
. " values ("
|
|
. $values . ")" . ";");
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
// STRING --> BOOLEAN
|
|
// Return whether or not a table of given name exists
|
|
function db_table_existant($table) {
|
|
if (!db_cmd("select * from information_schema.tables "
|
|
. " where table_name = " . string_wrap($table) . ";")) {
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// STRING ARRAY --> BOOLEAN
|
|
// Create a table of given name and columns (with array of column-strings)
|
|
function db_create_table($table, $columns) {
|
|
return db_cmd("create table " . $table
|
|
. " (" . comma_sep($columns) . ");");
|
|
}
|
|
|
|
?>
|