PHP

check string in php

$names = array("Maria", "Jhon", "John", 777, "Michael");

    foreach ($names as $check) {
        if(is_string($check)) {
            echo "This is a string: ". $check. "<br>";
        } else {
            echo "This is not a string: ".$check. "<br>";
        }
    }

// using foreach and is_string menthods
// If you want to check an array if it contains number or not

php check string

// if you want to test content of a string to match a model

//You should use a regex filter with preg_match who returns 1 or 0

// this filter works for most of cases

/* use this regex */ preg_match("/^[a-z ,.'-]+$/i", your_string);

if you want more regex filters you can make yours on 'https://regex101.com/'