check value is numeric in php 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($var_str) );
/*
Output -
bool(true)
bool(false)
*/
Example 2: php check if string or number
<?php if (is_numeric("cake")) { echo "Yes"; } else { echo "No"; } ?>
Example 3: how to check if PHP variable contains non-numbers?
if ( is_numeric($_POST['foo']) ) {
$foo = $_POST['foo'];
} else {
// Error
}