How to search for string in array?

Question

I have a string in a custom field usp-custom-60:

Via Prospero Lavarello, 2, 16142 Genova GE, Italia

Then I get a value from GET

$myTerm = $_GET['cityName'];

And now $myterm is genova

And I have a loop where I am first trying to split the whole string and convert it into an array, then I am asking if a term is in array:

$catIds = array();

    while  {
        $query->the_post();
        $id = get_the_ID();
        $custom_field = usp_get_meta(false, 'usp-custom-60');
        $custom_field   = explode(" ", $custom_field);
        if (in_array($myTerm, $custom_field, true)) {
            array_push($catIds, $id);
            var_dump($catIds);
    }

But I get no results. If I do var_dump($custom_field) I get;

array(8) { [0]=> string(3) "Via" [1]=> string(8) "Prospero" [2]=> string(10) "Lavarello," [3]=> string(2) "2," [4]=> string(5) "16142" [5]=> string(6) "Genova" [6]=> string(3) "GE," [7]=> string(6) "Italia" } array(8) { [0]=> string(3) "Via" [1]=> string(8) "Prospero" [2]=> string(10) "Lavarello," [3]=> string(2) "2," [4]=> string(5) "16142" [5]=> string(6) "Genova" [6]=> string(3) "GE," [7]=> string(6) "Italia" } array(8) { [0]=> string(3) "Via" [1]=> string(9) "Adalberto" [2]=> string(7) "Catena," [3]=> string(2) "4," [4]=> string(5) "20121" [5]=> string(6) "Milano" [6]=> string(3) "MI," [7]=> string(6) "Italia" }

Based on the other answer suggested, I tried the following

$myTerm = $_GET['cityName']; 

$catIds = array();

$args = get_posts( 
    array( 
        'post_type'      => 'post', 
        'posts_per_page' => -1, 
    ) 
);
$query = new WP_Query( $args );
if ( $query->have_posts() ) {
    while ( $query->have_posts() ) {
        $query->the_post();
        $id = get_the_ID();
        $custom_field = usp_get_meta(false, 'usp-custom-60');
        if (strpos($custom_field, $myTerm) !== false) {
            array_push($catIds, $id);
        }     
        if(count($catIds) > 0){
            $arrayFUllCity = "fullCity";
        } else {
            $arrayFUllCity = "empty";
        }
    }
    //$catIds = implode( ", ", $catIds );
    var_dump($catIds);
}

But I get array(0) { } even tho the echo $custom_field gives me 3 results with

Via Prospero Lavarello, 2, 16142 Genova GE, Italia

Via Prospero Lavarello, 2, 16142 Genova GE, Italia

Via Adalberto Catena, 4, 20121 Milano MI, Italia

I don't entirely follow--can you not use strpos? php.net/manual/en/function.strpos.php — ggorlen
– ggorlen, Commented Nov 21, 2018 at 0:43
@ggorlen why strops? I have an entire string, I need to check if $myterm is in string — rob.m
– rob.m, Commented Nov 21, 2018 at 0:44
@rob.m That's exactly what strpos does, check if a string is in a string. — ggorlen
– ggorlen, Commented Nov 21, 2018 at 0:45
Possible duplicate of How do I check if a string contains a specific word? — ggorlen
– ggorlen, Commented Nov 21, 2018 at 0:47

Nick · Accepted Answer · 2018-11-21 03:30:32Z

1

Your issue (as far as I can see is that you have a case mismatch between $myTerm which is "genova" and the string, which has "Genova" in it. Since in_array is case-sensitive, the check fails. I would use preg_match on the original string to solve this, using \b to check for word boundaries around $myTerm, and the i modifier to make the regex case-insensitive:

$custom_fields = 'Via Prospero Lavarello, 2, 16142 Genova GE, Italia';
$myTerm = 'genova';
echo preg_match("/\b$myTerm\b/i", $custom_fields);

Output:

1 (true)

Demo on 3v4l.org

edited Nov 21, 2018 at 3:30

answered Nov 21, 2018 at 1:55

Nick

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Comments

Funk Forty Niner · Accepted Answer · 2018-11-21 00:56:20Z

0

In this kind of case using strpos is best way. From my end it's not possible to run your code because of database relationship. but you can try this solution. May be problem in extra spacing.

$catIds = array();

    while  {
        $query->the_post();
        $id = get_the_ID();
        $custom_field = usp_get_meta(false, 'usp-custom-60');
        $custom_field = explode(" ", $custom_field);
        $custom_field = array_map('trim', $custom_field);
        if (in_array($myTerm, $custom_field, true)) {
            array_push($catIds, $id);
            var_dump($catIds);
    }

edited Nov 21, 2018 at 0:56

Funk Forty Niner

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answered Nov 21, 2018 at 0:53

Himel Rana

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8 Comments

rob.m Over a year ago

I still get array(0) { } even tho the strings are as per the bottom of my question

Himel Rana Over a year ago

try to echo $id to be sure $id is not blank.

rob.m Over a year ago

if I place echo $id before in_array, I get 127431 127429 127427 array(0) { }

rob.m Over a year ago

this isn't working $custom_field = explode(" ", $custom_field);

Himel Rana Over a year ago

explode should work. check your $custom_field >> echo $coustom_field; before explode

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