(PHP 8 >= 8.4.0)
Pdo\Pgsql::escapeIdentifier — Escapes a string for use as an SQL identifier
Escapes a string for use as an SQL identifier, such as a table, column, or function name. This is useful when a user-supplied identifier might contain special characters that would otherwise not be interpreted as part of the identifier by the SQL parser, or when the identifier might contain upper case characters whose case should be preserved.
inputA string containing the escaped data.
示例 #1 Pdo\Pgsql::escapeIdentifier() example
<?php
$pdo = new Pdo\Pgsql('pgsql:dbname=test host=localhost', $user, $pass);
$unescapedTableName = 'UnescapedTableName';
$pdo->exec("CREATE TABLE $unescapedTableName ()");
$escapedTableName = $pdo->escapeIdentifier('EscapedTableName');
$pdo->exec("CREATE TABLE $escapedTableName ()");
$statement = $pdo->query(
"SELECT relname FROM pg_stat_user_tables WHERE relname ilike '%tablename'"
);
var_export($statement->fetchAll(PDO::FETCH_COLUMN, 0));
$tableNameWithSymbols = 'Table-Name-With-Symbols';
$pdo->exec("CREATE TABLE $tableNameWithSymbols ()");
?>以上示例的输出类似于：
array ( 0 => 'unescapedtablename', 1 => 'EscapedTableName', ) Fatal error: Uncaught PDOException: SQLSTATE[42601]: Syntax error: 7 ERROR: syntax error at or near "Table" LINE 1: CREATE TABLE Table-Name-With-Symbols ()