<?php /* indraginanjar@gmail.com 17 Januari 2014 */ function local_var($num){ $local_num = $num; return $local_num + 3; } function function_param($num){ return $num + 3; } function global_var($num){ global $number; return $number + 3; } $number = 4; $count = 1000000; $lengths = array(); $local_start = microtime(true); for($i = 0; $i $local_time = $local_end - $local_start)); $function_param_start = microtime(true); for($i = 0; $i $function_param_end - $function_param_start)); $global_var_start = microtime(true); for($i = 0; $i $global_var_end - $global_var_start)); echo "# Test:\n\n"; echo "## Using Local Variable\n"; echo ' start:', $local_start, "\n"; echo ' end:', $local_end, "\n\n"; echo ' length:', $lengths['local_var'], "\n\n"; echo "## Using Function Parameter Only\n"; echo ' start:', $function_param_start, "\n"; echo ' end:', $functi...