I have edited some code that I found online to generate a random string in PHP which I am going to use as an ID.
<!DOCTYPE html>
<html class="no-js">
<head>
<meta charset="utf-8">
<title>ID Generator</title>
<link rel="stylesheet" href="idgen.css">
</head>
<body>
<?php
class randomPassword {
function __construct( $passType='alphaNumeric', $length=64, $rangeLength=9 ) {
$this->passType = $this->setPassType( $passType );
$this->setLength( $length );
$this->setRangeLength( $rangeLength );
}
function setRangeLength( $rangeLength ) {
$this->rangeLength=$rangeLength;
}
// set the length of the password
private function setLength( $length ) {
$this->length=$length;
}
// set the type of password
private function setPassType( $passType ) {
return $passType.'Chars';
}
// return an array of numbers
private function numericChars() {
return range( 0, $this->rangeLength );
}
// return an array of lowercase chars
private function lcAlphaChars() {
return range( 'a', 'z' );
}
//return an array of uppercase chars
private function ucAlphaChars() {
return range( 'A', 'Z' );
}
// return an array of all alpha chars
private function alphaChars() {
return array_merge( $this->lcAlphaChars(), $this->ucAlphaChars() );
}
// return an array of alphanumeric chars
private function alphaNumericChars() {
return array_merge( $this->alphaChars(), $this->numericChars() );
}
// return array of lowercase characters and numbers
private function lcAlphaNumericChars() {
return array_merge( $this->lcAlphaChars(), $this->numericChars() );
}
// return array of uppercase characters and numbers
private function ucAlphaNumericChars() {
return array_merge( $this->ucAlphaChars(), $this->numericChars() );
}
// return a string of chars
private function makeString() {
// set the function to call based on the password type
$funcName = $this->passType;
return implode( $this->$funcName() );
}
// shuffle the chars and return $length of chars
public function makePassword() {
return substr( str_shuffle( $this->makeString() ), 1, $this->length );
}
} // end class
?>
<h3>ID Generator</h3>
<h4>LC Alpha Numeric</h4>
<?php
for ($i=0;$i<5;$i++)
{
try
{
$obj = new randomPassword( 'lcAlphaNumeric', 32, 9 );
echo $obj->makePassword().'<br />';
}
catch( Exception $ex )
{
echo $ex->getMessage();
}
}
?>
</body>
</html>
Below is some sample output:
9hx2qwuvjbyn18tceosp75gkf30mrli4 tzqujok5xnr783wem6sv2afcgi9h1d0y 87bxc9vr6sewaoltkni24jdgh3z1fu05 j2shgmd4o6w09yx85avp1iflqubtk3nc 0r1q9engl43uv5poxfjd6zi8cha72ytk
If I try the same again but this time increasing the length to 64 (so to avoid collision) it only produces a string of length 36 (Its maximum as the elements are NOT repeating). How can I make it so that it can choose anything from the arrays?
