PHP How to merge two arrays inside a loop

Question

I have a problem with the code below which is driving me crazy. What I want to do is to compare a given array with a sentence and then I need to know their position in the sentence for each occurrence, by now the script only return just one array, for example with the positions in which the name Marta is found inside the sentence. I trying to merge all the results in just one array but I'm a bit lost at the moment. I hope someone can give me some clues to make it. Best regards.

$sentence = 'Maria is Maria and Marta is Marta.';
$womennames = array("Maria","Marta");    

function poswomen($chain, $words){

    foreach($words as $findme){
        $valida_existe = substr_count($chain,$findme);
        $largo_encuentra = strlen($findme);
        $posicion = array();

        for($x=0; $x < strlen($chain); $x++){
            $posic_x = strpos($chain, $findme, $x);
            if($posic_x >= 0){              
                $posicion[] = $posic_x;                    
                $x = $x+$largo_encuentra;
            }            
        }

        $posicion = array_unique($posicion);        
        $posicion = implode(",",$posicion);   

    }
    return $posicion;
}

poswomen($sentence, $womennames); 
print_r (poswomen($sentence, $womennames));

You're resetting $posicion each at the beginning of each iteration of the foreach array. You should initialize it outside the loop. — Barmar
– Barmar, Commented Jun 9, 2014 at 5:22
Thanks Barmar, I was not understanding the work flow of the bucle. — Pablete
– Pablete, Commented Jun 9, 2014 at 15:17

user1978142 · Accepted Answer · 2014-06-09 07:40:53Z

1

Just like barmar has said, your position keeps resetting you need to set it outside, from that , then add the currently found position so that it will carry on. Consider this example:

$sentence = 'Maria is Maria and Marta is Marta.';
$women_names = array('Maria', 'Marta');
$pos = 0;
$positions = array();

foreach($women_names as $name) {
    while (($pos = strpos($sentence, $name, $pos))!== false) {
        $positions[$name][] = $pos;
        $pos += strlen($name);
    }
    $positions[$name] = implode(', ', $positions[$name]);
}

echo '<pre>';
print_r($positions);
echo '</pre>';

Sample Output:

Array
(
    [Maria] => 0, 9
    [Marta] => 19, 28
)

edited Jun 9, 2014 at 7:40

answered Jun 9, 2014 at 7:11

user1978142

7,9683 gold badges19 silver badges20 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Pablete Over a year ago

Thanks you very much Kevinabelita, I really appreciate your help, it works perfectly ;)

Collectives™ on Stack Overflow

PHP How to merge two arrays inside a loop

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related