Introduction to the specific use of PHP rounding function_PHP tutorial

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>

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>

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>

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>

http://www.bkjia.com/PHPjc/446200.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/446200.htmlTechArticleFor the powerful ceil - further rounding instructions float ceil (float value) returns no less than value The next integer, value is rounded up by one if there is a decimal part. The class returned by ceil()...