note 95068 deleted from language.variables.scope by danbrown

Note Submitter: brian at pribis dot com ---- I'm not sure what the man means by a variable having a "single scope". At first it appears that PHP5 is lexically scoped, but I came across the following situation: for($i=0; $i < 10; $i++){ $count += $i; } echo $count; The above code will work and $count will print out its incremented value, but you will most likely see errors in your log file to the effect of "variable count not defined". It turns out that variables are dynamically scoped within a function (restricted dynamic? statically dynamic? dynamically static?). However, if you declare a variable outside of a function you have to use the global keyword. On the other hand, using a variable that was first declared inside a loop outside of that loop works, but raises a "silent" error (logged, but not sent to the browser).