php combine string and variable code example

Example 1: join string php

<?php
$arr = array('Hello','World!','Beautiful','Day!');
echo join(" ",$arr);
?>

Example 2: php concatenate variables to function

public function getAvg(string $var) {
  # A sample from a game I wrote.
  # Concatenatin on the other side is just {stuff.$var}
  # You can also concatenate multiple variables in a varaible:
  # {$varA.$varb}
  $min = $this->{$var._min};
  # Assigns to $min object property matching $var + '_min' string.
  $max = $this->{$var._max};
  # Assigns to $max object property matching $var + '_max' string.
  $avg = (($min + $max) / 2);
  return round($avg);
}

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Php Example