The action represent the page that will receive the posted data. You may use differents actions or the same action with different parameters.
If you use the same action, you had to insert a parameter that permit to manage different cases. You may insert an hidden field to do this.
Consider these simple forms:
<form name="form_a" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
<input type="hidden" name="form" value="A">
<button type="submit">Form A</button>
</form>
<form name="form_b" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
<input type="hidden" name="form" value="B">
<button type="submit">Form B</button>
</form>
To manage the different submission, you had to check the value of the hidden field:
if(isset($_POST['form'])){
switch ($_POST['form']) {
case "A":
echo "submitted A";
break;
case "B":
echo "submitted B";
break;
default:
echo "What are you doing?";
}
}
You can't submit two separate forms at the same time, because each submission represent a different request to the server.
You may merge manually the fields of the two forms, or use Javascript to do this for you.
Keep in mind that if you do this via Javascript, the field of the forms had to have differents names.
As you caan see here you can do simply via jQuery:
var str1 = $("form_a").serialize();
var str2 = $("form_b").serialize();
$.post(url, str1 + "&" + str2);
Where url is the action params of the form
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