php is a number code example
Example 1: php is numeric
//is_numeric — Finds whether a variable is a number or a numeric string
is_numeric ( $variable ); // returns true or false
Example 2: php check if string or number
<?php if (is_numeric(887)) { echo "Yes"; } else { echo "No"; } ?>
Example 3: php is variable a number
if(is_numeric($what_am_i)){
//true
}
Example 4: php check if string or number
<?php if (is_numeric("cake")) { echo "Yes"; } else { echo "No"; } ?>
Example 5: how to check if PHP variable contains non-numbers?
if ( is_numeric($_POST['foo']) ) {
$foo = $_POST['foo'];
} else {
// Error
}