How to convert decimal to integer in php

Method: 1. Use the floor() function to round down to the nearest integer, the syntax "floor (decimal)"; 2. Use the ceil() function to round up to the nearest integer, the syntax "ceil(decimal)"; 3. Use the round() function to round floating point numbers, the syntax is "round(decimal)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php method to convert decimal to integer 1: floor (float value) Rounding method

floor() function rounds down to the nearest integer.

Return the next integer not greater than value, and round off the decimal part of value. The type returned by floor() is still float because the range of float values ​​is usually larger than that of integer.

Example:

<?php
echo floor(4.3)."<br>";   // 4
echo floor(9.999); // 9
?>

Output:

4
9

php Method 2 of converting decimals to integers: ceil (float value) Rounding to the nearest integer

ceil() function rounds up to the nearest integer.

Returns the next integer that is not less than value. If value has a decimal part, it is rounded up by one. The type returned by ceil() is still float because the range of float values ​​is usually larger than that of integer.

Example:

<?php
echo ceil(4.3)."<br>";    // 5
echo ceil(9.999);  // 10
?>

Output:

5
10

php method three to convert decimal to integer: round (float val [, int precision ]) Rounding floating-point numbers

round() function rounds floating-point numbers.

Returns the result of val rounded to the specified precision (the number of decimal digits after the decimal point). precision can also be negative or zero (default).

<?php
echo round(3.4)."<br>";         // 3
echo round(3.5)."<br>";         // 4
echo round(3.6)."<br>";         // 4
echo round(3.6, 0)."<br>";      // 4
echo round(1.95583, 2)."<br>";  // 1.96
echo round(1241757, -3)."<br>"; // 1242000
echo round(5.045, 2)."<br>";    // 5.04
echo round(5.055, 2);    // 5.06
?>

Output:

3
4
4
4
1.96
1242000
5.05
5.06

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