Detailed explanation of php Math function

Mathematics (Math)Functioncan handle values in the range ofintegerandfloat.

This article mainly introducesPHPbuilt-in Mathfunctionefficiency test, tests the execution time of related PHP built-in mathematical operation functions in the form of examples, and analyzes its For operational efficiency, friends who need it can refer to the

code as follows:

$start = microtime(TRUE); for ($i=0; $i < 200000; $i++){ $s = 0; for ($j=0; $j < 3; $j++){ $s += ($j+$i+1) * ($j+$i+1); } } echo microtime(TRUE) – $start; // output: 0.33167719841003

Then compare the code and results using the Math function, the code is as follows:

$start = microtime(TRUE); for ($i=0; $i < 200000; $i++){ $s = 0; for ($j=0; $j < 3; $j++){ $s += pow($j+$i+1, 2); } } echo microtime(TRUE) – $start; // output: 0.87528896331787

See that there is no , efficiency increased by 100%! ! I used to think that PHP's built-in Math was faster, but I didn't know it. The absolute value abs, the maximum value max, the minimum value min, etc. are not as efficient as the native if judgment.

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