a method of selecting random characters from given string

Question

Can anyone help me with a solution that pulls the position and value of a random character from a given string using PHP. For example I have a a string variable $string = \

Answer 1

Code:

$string    = 'helloworld';
$position  = rand(0, strlen($string));
$character = $string[$position-1];

echo $character . ' is placed ' . $position . ' in the following string: ' . $string;

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Output Example:

e is placed 2 in the following string: helloworld

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CodePad Demo

Answer 2

Using mt_rand(),

You can get the index of a random character by:

$charIndex = mt_rand(0, strlen($string)-1);
$char = $string[$charIndex]; // or substr($string, $charIndex, 1)

Answer 3

$string = 'helloworld';

//generate a random position between 0 and string length ( note the -1 )
$randPos = mt_rand(0, strlen($string)-1);

echo 'Position : ' . $randPos . "\n";
echo 'Character : ' . $string[$randPos] . "\n";

Answer 4

$str = 'helloworld';

$randomChar = $str[rand(0, strlen($str)-1)];

CodePad.

Answer 5

$name = "Hello";
echo $name[rand(0,strlen(substr($name,0,strlen($name)-1)))];

Answer 6

You can use the rand($x,$y) function which returns a random number between $x and $y inclusive:

$str = 'helloworld';

// get a random index between 0 and the last valid index
$rand_pos = rand(0,strlen($str)-1);

// access the char at the random index.
$rand_chr = $str[$rand_pos];