php not numeric code example
Example 1: check if string is number or not php
$var_num = "1";
$var_str = "Hello World";
var_dump( is_numeric($var_num), is_numeric($var_str) );
/*
Output -
bool(true)
bool(false)
*/
Example 2: php is variable a number
if(is_numeric($what_am_i)){
//true
}