check if input is number 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(887)) { echo "Yes"; } else { echo "No"; } ?>

Example 3: php check if string or number

<?php if (is_numeric("cake")) { echo "Yes"; } else { echo "No"; } ?>

Example 4: php check if input is int

$a = 5; //returns true
$a = "5"; //returns false
$a = 5.3; //returns false
is_int($a);

Example 5: check input value is integer or not in php

// to check the input integer validation we can use is_int() function
Syntax:
is_int(parameter);

$x = 10; //returns true
$x = "123"; //returns false
$x = 12.365; //returns false
$x = "ankur"; //returns false
is_int($x);