1--TEST-- 2log() tests 3--FILE-- 4<?php 5echo "On failure, please mail result to php-dev@lists.php.net\n"; 6for ($x = 0, $count= 0; $x < 200; $x++) { 7 $x2 = (int) exp(log($x)); 8 // e ^ log(x) should be close in range to x 9 if (($x2 < ($x + 2)) && ($x2 > ($x - 2))) { 10 $count++; 11 } else { 12 print "$x : $x2\n"; 13 } 14} 15print $count . "\n"; 16 17// Now test the base form of log 18for ($base = 2; $base < 11; $base++) { 19 for ($x = 0, $count= 0; $x < 50; $x++) { 20 $x2 = (int) pow($base, log($x, $base)); 21 // base ^ log(x) should be close in range to x 22 if (($x2 < ($x + 2)) && ($x2 > ($x - 2))) { 23 $count++; 24 } else { 25 print "base $base: $x : $x2\n"; 26 } 27 } 28 print $count . "\n"; 29} 30?> 31--EXPECT-- 32On failure, please mail result to php-dev@lists.php.net 33200 3450 3550 3650 3750 3850 3950 4050 4150 4250 43
