Comparison of if and or running efficiency in PHP, phpifor Efficiency

Comparison of if and or running efficiency in PHP, phpifor Efficiency

This article describes how to compare the if and or running efficiency in PHP. Share it with you for your reference. The specific implementation method is as follows:

An example is provided to illustrate the running efficiency of if and or. if you are interested, you can test it. Here, the test result is that or is more efficient than if. The specific code is as follows:
Copy codeThe Code is as follows: <? Php
$ T1 = microtime ();
While ($ I <= 10000 ){
If (! Defined ('app _ path'); // 0.011059
// Defined ('app _ path') OR 1; // 0.009398
$ I ++;
}

$ T2 = microtime ();
Echo $ t2-$ t1;
?>

Instance 2:
Copy codeThe Code is as follows: <? Php
$ T1 = microtime ();

While ($ I <= 1000000 ){
If (! Defined ('app _ path'); // 0.20043
// Defined ('app _ path') OR 1; // 0.107475
$ I ++;
}

$ T2 = microtime ();
Echo $ t2-$ t1;
?>

I hope this article will help you with PHP programming.