Introduction to the specific use of PHP rounding function

Introduction to the specific use of PHP rounding function_PHP tutorial

WBOY

Release： 2016-07-15 13:31:38

Original

867 people have browsed it

For the powerful ceil - further rounding
Explanation
float ceil (float value)
Returns the next integer that is not less than value, value If there is a decimal part, round it up. The type returned by ceil() is still float because the range of float values is usually larger than that of integer.

PHP rounding function example 1. ceil() example

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><</span><span> ?php  </span></span></li><li><span>echo ceil(4.3); // 5  </span></li><li class="alt"><span>echo ceil(9.999); // 10  </span></li><li><span class="tag">?></span><span>   </span></span></li>
<li class="alt"><span> </span></li>
</ol>

Copy after login

floor -- rounding by rounding
Explanation
float floor (float value)
Returns the next integer that is not greater than value, and rounds 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.

PHP rounding function example 1. floor() example

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><</span><span> ?php  </span></span></li><li><span>echo floor(4.3); // 4  </span></li><li class="alt"><span>echo floor(9.999); // 9  </span></li><li><span class="tag">?></span><span>   </span></span></li>
<li class="alt"><span> </span></li>
</ol>

Copy after login

round -- round floating point numbers
Description
float round (float val [, int precision])
Returns the result of rounding val according to the specified precision (the number of decimal digits after the decimal point). precision can also be negative or zero (default).

PHP rounding function example 1. round() example

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><</span><span> ?php  </span></span></li><li><span>echo round(3.4); // 3  </span></li><li class="alt"><span>echo round(3.5); // 4  </span></li><li><span>echo round(3.6); // 4  </span></li><li class="alt"><span>echo round(3.6, 0); // 4  </span></li><li><span>echo round(1.95583, 2); // 1.96  </span></li><li class="alt"><span>echo round(1241757, -3); // 1242000  </span></li><li><span>echo round(5.045, 2); // 5.05  </span></li><li class="alt"><span>echo round(5.055, 2); // 5.06  </span></li><li><span class="tag">?></span><span> </span></span></li>
<li class="alt"><span> </span></li>
</ol>

Copy after login

intval---convert the variable into an integer type

PHP rounding function example intval()

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><</span><span> ?php  </span></span></li><li><span>echo intval(4.3); //4  </span></li><li class="alt"><span>echo intval(4.6); // 4   </span></li><li><span class="tag">?></span><span> </span></span></li>
<li class="alt"><span> </span></li>
</ol>

Copy after login