2

i'm reading a blog that give something php coding tips.there are two places I don't understand.

  1. less/not use continue.

  2. the structure :

    do{
  if(true) {
       break;
  }
  if(true) {
       break;
  }
} while(false);

    is better than :

    if(true) {
} else if(true) {
} else {
}

can somebody explain why ?

steve
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  • The if block isn't even necessary. – Cole Tobin Jun 09 '12 at 03:56
  • Does it pertain to how PHP handles the `if` and `do`? Write a readable code... PHP should perform the right optimizations to make no difference between the two structures - if it does not, it should/will. A link to the tips? – Déjà vu Jun 09 '12 at 04:37
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    Any optimization tips like these should be ignored. I'm sorry you wasted your time reading that blog. – Matthew Jun 09 '12 at 04:53
  • Regarding question 2: see http://stackoverflow.com/questions/1445025/what-is-the-advantage-of-a-do-whilefalse . It's got nothing to do with PHP specifically, it's just a pseudo-pattern. – DCoder Jun 09 '12 at 05:15

2 Answers2

0

I highly doubt this as a do { } while () is checked every iteration, whereas an if is just a simple comparison.

Cole Tobin
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Maybe the point they were trying to demonstrate in the blog is that a do {} while() loop will pause your code until a condition is met, where as the if statements will be parsed and your code will continue regardless of whether the condition is met or not.

Michael Whinfrey
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