(1) PHP retains three decimal places and rounded
The code is as follows |
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$num = 0.0215489; Echo sprintf ("%.3f", $num); 0.022 |
(2) PHP keep three decimal digits not rounded
The code is as follows |
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$num = 0.0215489; Echo substr (sprintf ("%.4f", $num), 0,-1); 0.021 |
(3) php into a method to take an integer (this in the paging program in the number of pages in the program will be used)
The code is as follows |
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echo ceil (4.3); 5 echo ceil (9.999); 10 |
(4) The method of the PHP house to take the integer
The code is as follows |
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echo floor (4.3); 4 echo Floor (9.999); 9 |
(5), round function
Example 1. Round () example
code is as follows |
&nbs P; |
<?php Echo round (3.4); & nbsp; //3 Echo round (3.5); //4 Echo round (3.6); & nbsp; //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. Echo Round (5.055, 2); //5.06 ? > |