In PHP what does it mean by a function being binary-safe ?
What makes them special and where are they typically used ?
In PHP what does it mean by a function being binary-safe ? What makes
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In PHP what does it mean by a function being binary-safe ?
What makes them special and where are they typically used ?
It means the function will work correctly when you pass it arbitrary binary data (i.e. strings containing non-ASCII bytes and/or null bytes).
For example, a non-binary-safe function might be based on a C function which expects null-terminated strings, so if the string contains a null character, the function would ignore anything after it.
This is relevant because PHP does not cleanly separate string and binary data.