PHP Comparison between fields

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1

Good,

I’m making 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" just posts the $postcomment field and posts above 20 characters, it passes,

Or

If you post the $uploaded field, and this field starts with http://, you pass.

How do I compare?

php

2 answers

1

You can use if's for verification, an example follows below:

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://"
}

0

Use the mb_strlen to know how many characters it has and compare with the minimum number of characters required.

For example:

if(mb_strlen($postcomment) > MINIMO_DE_CARACTERES && !isset($uploaded)){
     $passa = true;
}

To know if it begins with http you can use REGEX, just remember that Urls can, start with the http as to https, so you can use:

/^(http|https):\/\//

Soon:

if(preg_match('/^(http|https):\/\//', $uploaded) && !isset($postcomment)){
     $passa = true;
}

You do not say what should occur if both are filled, this is a situation that should be dealt with, anyway this would be a solution:

if((!empty($postcomment) ^ !empty($uploaded))
   && (mb_strlen($postcomment) > 20 || preg_match('/^(http|https):\/\//', $uploaded))){

    $passa = true;

}

Test it out here.

The use of xor (^) will cause only if the $uploaded or the $postcomment are completed, but not both, in which case if both are completed "will not continue".

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