arrays driving me mad.. how to compare 2 arrays?

[sapoxgn]

i have this:

while($modulos = mysql_fetch_assoc($query_mod)) {
	print_r($modulos);
	echo "<br />";
}
echo "<br />";
while($resposta = mysql_fetch_assoc($query_respostas)) {
	print_r($resposta);
	echo "<br/>";			
}

it return me this:

Array ( [modulo_id] => 1 ) 
Array ( [modulo_id] => 3 ) 
Array ( [modulo_id] => 4 ) 

Array ( [modulo] => 3 ) 
Array ( [modulo] => 4 )

I need to compare this two arrays, for each key of the first one.. i need to see if there's an equal value in the second one...

in this cause it should give me false for the "1" value and true for 3 and 4.

But i cant find a way to do it..

please.. help... i m really stressed with this stuff :queasy:

[Installer]

See array_diff(), array_intersect() and their ilk. But actually what you have there are five arrays, not two.

[sapoxgn]

Originally posted by Installer
See array_diff(), array_intersect() and their ilk. But actually what you have there are five arrays, not two.

but why when i make a mysql_fetch_assoc it doesnt give me just one array? 😕

[sapoxgn]

i ve finally figured out how to do it! 😃

function quadro() {
		$usuario = $_SESSION['user_id'];
		$query_respostas = mysql_query("SELECT DISTINCT enquete.modulo FROM respostas, enquete, modulo WHERE respostas.usuario='$usuario'  AND respostas.enquete=enquete.enquete_id ORDER BY enquete.modulo ASC") or die(mysql_error());
		$query_mod = mysql_query("SELECT modulo_id FROM modulo ORDER BY modulo_id ASC");

	while($modulos = mysql_fetch_assoc($query_mod)) {
		$mod[] = $modulos;
	}
	while($resposta = mysql_fetch_assoc($query_respostas)) {
		$resp[] = $resposta;
	}
//print_r($mod);
//print_r($resp);
foreach($mod as $modulos) {
	$feedback = '';
	foreach($resp as $resposta) {
		if($modulos['modulo_id'] == $resposta['modulo']) {
			$feedback = true;
		}
	}
	if($feedback) {
		echo $modulos['modulo_id'] . ' - <a href="modulos.php?id=' . $modulos['modulo_id'] . '"> X </a> | ';
	} else {
		echo $modulos['modulo_id'] . ' - <a href="modulos.php?id=' . $modulos['modulo_id'] . '"> O </a> | ';
	}
}		
}

this did the trick:

while($modulos = mysql_fetch_assoc($query_mod)) {
			$mod[] = $modulos;
		}

[Installer]

but why when i make a mysql_fetch_assoc it doesnt give me just one array?

while($modulos = mysql_fetch_assoc($query_mod)) { 
    print_r($modulos); 
    echo "<br />"; 
}

It does, each time it's called. The "mysql_fetch_assoc()" is inside a loop,
so it's called on every iteration; each time a separate array is returned.
To get it all into one array you could do something like this:

while($modulos = mysql_fetch_assoc($query_mod)) { 
    print_r($modulos);
    $array_1[] = $modulos; 
    echo "<br />"; 
}

Edit: Please break up your long lines, FCOL.

[Drakla]

mark the thread as resolved if you've worked it out.