Is it possible to check the value of a certain key in a PHP array in 1 IF statement? Right now, in order to not throw an index offset error I have to check if the key is set, then check its value.
if (isset($array[$key]))
{
if ($array[$key] == $x)
{
// do stuff
}
}
(sorry, accidentally put ! in first IF originally)
The && operator is short-circuit, thus:
if (isset($array[$key]) && $array[$key] == $x)
// do stuff
}
Happy coding.
You may also use a reference: if $array[$key] does not exist, then it will be created and set to null; therefore, no error will occur. This is most useful when you expect the value to exist; ie, you do not want to act specially if the value does not.
if (&$array[$key] == $x) {
}
try this. ur current code wont do anything bc if it is not set, the second if statement will never be...
if (isset($array[$key]) && $array[$key] == $x)
{
//do stuff if that key == $x
}
Yes, with the boolean operator && ;)
if (isset($array[$key]) && ($array[$key] == $x)) {
// do stuff
}
Best approach is using array_key_exists() function.
An example- array_key_exists($key,$array);
Check the documentation link more details.
if you have an associative array compare the size of array to the key index instead of the $key
if(sizeof($array) >= $key){
if ($array[$key] == $x)
{
// do stuff
}
}
