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@ 2021-07-11T18:30:16Z

<?php

$_GET['user_id'] = 3;

$query[] = "select * from preferences user_id = ";
$query[] = $_GET['user_id'];

db_exec($query);

function db_exec(string|array $query_parts)
{
    if (is_string($query_parts) && !is_literal($query_parts)) {
        throw new \Exception("Cannot use non literal string as query.
Please pass the parts in as an array");
    } else {
        foreach ($query_parts as $query_part) {
            if (is_string($query_part) && !is_literal($query_part)) {
                throw new \Exception("non-literal string found [$query_part]");
            }
            else if (is_int($query_part)) {
                // todo - decide if you want to allow this or not.
                // I personally wouldn't.
            }
            else {
                // todo - support other types
            }
        }

        var_dump(implode("", $query_parts));
    }

    // rest of db_exec here...
}

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Call to undefined function is_literal() in /in/aCFIT:17 Stack trace: #0 /in/aCFIT(8): db_exec(Array) #1 {main} thrown in /in/aCFIT on line 17
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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