PHP parse error when use []

Question

The code is

// Get singleton (first value from row with single value)
static function singleton($arg, $params = false) {
    return pg_fetch_row(SQL($arg, $params))[0];
}

The error message is

2014-02-19 12:54:23: (mod_fastcgi.c.2701) FastCGI-stderr: PHP message: PHP Parse error: syntax error, unexpected '[' in /var/www/blockexplorer.com/htdocs/includes/sql.inc on line 69

I think there is a config that can fix it.

It seems like a PHP5.3, that not supports this. So, you need to place result of function pg_fetch_row into variable first - as @Mario Jonathan calls it. — Václav
– Václav, Commented Feb 19, 2014 at 6:26
Your syntax is correct, but that's a very new feature of PHP that (IIRC) requires at least version 5.4. I can't find it in the change logs, but it's better (for now) to count on that not working unless your developing for a specific platform. — user50049
– user50049, Commented Feb 19, 2014 at 6:27

Manish Kumar · Accepted Answer · 2014-02-19 06:27:45Z

4

This depends on PHP version you are using. If you are using PHP 5.4 or above then your code will not give error otherwise you will have to store the result in a variable and use it.

Reference : PHP 5.4

Look for "Array Dereferencing" here.

answered Feb 19, 2014 at 6:27

Manish Kumar

5763 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Mario · Accepted Answer · 2014-02-19 06:23:20Z

2

Put the result of the function in a variable

static function singleton($arg, $params = false) {
    $foo = pg_fetch_row(SQL($arg, $params));
    return $foo[0];
}

answered Feb 19, 2014 at 6:23

Mario

1,7161 gold badge23 silver badges30 bronze badges

Comments

WeSee · Accepted Answer · 2014-02-19 06:30:24Z

0

PHP does not support anonymous arrays. Use an named array instead:

static function singleton($arg, $params = false) {
    $row=pg_fetch_row(SQL($arg, $params));
    return $row[0];
}

answered Feb 19, 2014 at 6:30

WeSee

3,8345 gold badges39 silver badges70 bronze badges

1 Comment

user50049 Over a year ago

Array dereferencing is supported by PHP, but only in 5.4+.

Collectives™ on Stack Overflow

PHP parse error when use []

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related