For example:
echo explode('@',$var); //but only echoing element 1 or 2 of the array?
Instead of:
$variable = explode('@',$var);
echo $variable[0];
Thank you.
5 Answers
On PHP versions that support array dereferencing, you can use the following syntax:
echo explode('@', $var)[0];
If not, you can use list():
list($foo) = explode('@', $var);
The above statement will assign the first value of the exploded array in the variable $foo.
Comments
Since PHP 5.4 you can write:
echo explode('@', $var)[0];
In earlier versions of PHP you can only achieve the behaviour with tricks:
echo current(explode('@', $var)); // get [0]
echo next(explode('@', $var)); // get [1]
Retreiving an element at an arbitrary position is not possible without a temporary variable.
Here is a simple function that can tidy your code if you don't want to use a variable every time:
function GetAt($arr, $key = 0)
{
return $arr[$key];
}
Call like:
echo GetAt(explode('@', $var)); // get [0]
echo GetAt(explode('@', $var), 1); // get [1]
7 Comments
SubjectCurio
Technically it was possible, you could do
echo current(explode('@', $var));
OBV
do those same tricks work in <5.4 aswell? I am looking for a general solution and not worry about the compatability issues
Cobra_Fast
@OBV Yes, this behaviour should still be functional in 5.4 and later versions. The safest bet is probably a temporary variable though.
Cobra_Fast
@OBV There is nothing in front of your first
@, so current() returns an empty string.
BlitZ
Lets just hope, that no one will take most bottom example too literally. Because it will be completely ineffective (:
|
Previous to PHP 5.4 you could do this:
echo array_shift(explode('@', $var));
That would echo the first element of the array created by explode. But it is doing so without error checking the output of explode, which is not ideal.
Comments
list can be used like this as well:
list($first) = explode('@', $var);
list(,$second) = explode('@', $var);
list(,,$third) = explode('@', $var);
list()that doesn't use temporary variables or additional function calls -- eval.in/54886