How to keep 2 decimal places without rounding in php

How to keep 2 decimal places without rounding in php:

Keep 2 decimal places without rounding,

In fact we After understanding the characteristics of sprintf, we will keep one more decimal place after rounding, and then use substr to intercept the first two digits: the code is as follows

$n=0.1265489;
echo sprintf("%.2f",substr(sprintf("%.3f", $n), 0, -1));//0.12

PHP keeps two decimal places and rounds, and uses the sprintf function to perform $n Formatted %.2f is the target format, where 2 represents two digits and f represents float (floating point type). The third is a decimal 6 that is rounded;

$n=0.1265489;
echo sprintf("%.2f", $n); // 0.13

round function

<?PHP
  echo round(3.4);         // 3
  echo round(3.5);         // 4
  echo round(3.6);         // 4
  echo round(3.6, 0);      // 4
  echo round(1.95583, 2);  // 1.96
  echo round(1241757, -3); // 1242000
  echo round(5.045, 2);    // 5.05
  echo round(5.055, 2);    // 5.06
?>

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