PHP 手冊
上一頁 | 附錄 D.Migrating from PHP/FI 2 to PHP 3 | 下一頁

# Short-circuited boolean evaluation

In PHP 3.0 boolean evaluation is short-circuited. This means that in an expression like (1 || test_me()), the function test_me() would not be executed since nothing can change the result of the expression after the 1.

This is a minor compatibility issue, but may cause unexpected side-effects.

上一頁 | 最開頭 | 下一頁
Error messages have changed | 上一層 | Function `TRUE`/`FALSE` return values