php - How to properly convert an array to sql string -


this question has answer here:

say i've got this:

$term_query = "and t.slug in ('" . $term_slugs . "') ";

where $term_slugs id array this:

array('foto', 'video');

if simple implode(), won't work because cannot 'photo, video'. should foreach cycle build "'photo','video'". can't think way... unelegant. there other smarter way?

you use:

$term_query = "and t.slug in ('" . implode("','",$term_slugs) . "') ";

however prepared statements nicer:

$term_query = "and t.slug in ('" . implode(",",array_fill(0,count($term_slugs),"?") . ") "

now can bind parameters:

pdo binding

$stmt = $pdoobject->prepare($query); //query full query contains parametrised $term_query  foreach ($term_slugs $index => &$slug) {     $stmt->bindparam($index+1,$slug); //+1 because pdo parameters index starting 1 }

mysqli binding

$stmt = mysqli_prepare($query); //query full query contains parametrised $term_query  $refarray = [ $stmt, array_fill(0,$term_slugs),"s") ]; //first 2 parameters bind param foreach ($term_slugs $index => &$slug) {     $refarray[] = &$slug; //mysqli_bind_param needs references }  call_user_func_array('mysqli_bind_param',$refarray);

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