Good,
I'm doing a system of comments, but I'm having problems, How do I check between two fields.
$postcomment = $_POST['message'];
$uploaded = $_POST['upload'];
For example, if the "user" only posts the $ postcomment field and if you post more than 20 characters,
Or
If you post the $ uploaded field, and if that field starts with http: //, it passes.
How do I make this comparison?
You can use if's for verification, here's an example:
if (strlen($postcomment) >= 20 && empty($uploaded)) {
// Veririca se o campo $postcomment tem mais de 20 caracteres e se o campo $uploaded esta vazio
} else if (!empty($uploaded) && preg_match('/^http:\/\//', $uploaded)) {
// Verifica se o campo $uploaded não esta vazio e se começa com "http://"
}
Use mb_strlen to know how many characters you have and compare with the minimum number of characters required.
For example:
if(mb_strlen($postcomment) > MINIMO_DE_CARACTERES && !isset($uploaded)){
$passa = true;
}
To find out if you start with http you can use REGEX, just remember that URLs can, start with http and https , so you can use:
/^(http|https):\/\//
Logo:
if(preg_match('/^(http|https):\/\//', $uploaded) && !isset($postcomment)){
$passa = true;
}
You do not say what should happen if both are filled, this is a situation that should be dealt with, this would be a solution:
if((!empty($postcomment) ^ !empty($uploaded))
&& (mb_strlen($postcomment) > 20 || preg_match('/^(http|https):\/\//', $uploaded))){
$passa = true;
}
The use of xor ( ^ ) will only cause $uploaded or $postcomment to be filled, but not both, in this case if both are filled "will not continue".