check if string is empty php code example
Example 1: php code to check if variable is null
if(empty($var1)){
echo 'This line is printed, because the $var1 is empty.';
}
Example 2: php check for empty string
if (empty($var)) {
echo '$var is either 0, empty, or not set at all';
}
Example 3: php empty array
$foo = array();
unset($foo);
Example 4: javascript check if empty
if (typeof myVar === 'undefined'){
console.log("I am not defined");
}
var emptyString="";
if (emptyString) {
console.log("im not empty");
}