PHP Select a random line of two lines

Question

$apple=""; $banana=""; $apple="Red"; $banana="Blue"; $random(rand($apple, $banana); echo $random; 

How can I select a random string (quickly) through PHP?

Answer 1

Code issue

The PHP rand() function takes two numbers as input to form a range for choosing a random number. You cannot feed the lines.

See the PHP man page for rand() .

Decision

You can use array_rand() :

 $strings = array( 'Red', 'Blue', ); $key = array_rand($strings); echo $strings[$key]; 

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Another option is to use shuffle() .

 $strings = array( 'Red', 'Blue', ); shuffle($strings); echo reset($strings); 

Answer 2

What about:

 $random = rand(0, 1) ? 'Red' : 'Blue'; 

Answer 3

Use an array:

 $input = array("Red", "Blue", "Green"); echo $input[array_rand($input)]; 

Answer 4

array_rand() is the best way:

 $varNames = array('apple','banana'); $var = array_rand($varNames); echo ${$varNames[$var]}; 

Answer 5

The rand() function has two parameters: the lower limit for a random number and the upper limit. You cannot use such variables because this is not how the function works.

Take a look at the documentation:
http://php.net/rand

A simple way to achieve what you want:

 $array = array(); $array[0] = 'banana'; $array[1] = 'orange'; $randomSelected = $array[rand(0,(count($array)-1))]; 

As far as I read, this solution is faster than array_rand() . I see if I can find the source of this.

Answer 6

Go to this old question, which tops Google results. You can have more than two options and still get everything on one line.

 echo ['green', 'blue', 'red'][rand(0,2)];