Problems checking out Empty()

Question

I’m having trouble checking a string using EMPTY(), it’s as follows. If I throw space into it " " it ceases to be empty.. and ends up inserting in the database the empty value, how can I solve this, which function?

Answer 1

Remove the spaces around the value before applying the empty:

$valor = "   ";
$valor = trim($valor);
if(empty($valor)) {
    echo "Sim, está vazio";
}

^{https://ideone.com/Afl1nm}

To function trim removes the following "blank" characters from the two ends of the string:

• " " (ASCII 32 (0x20)), normal space.
• "\t" (ASCII 9 (0x09)), a tab.
• "\n" (ASCII 10 (0x0A)), a new line (line feed).
• "\r" (ASCII 13(0x0D)), a car reset.
• "\0" (ASCII 0 (0x00)), the NULL byte.
• "\x0B" (ASCII 11 (0x0B)), a vertical tabulation.