strstr()

strstr()

function strstr(string $haystack, string $needle, bool $before_needle = false): mixed

Returns the portion of a string starting at the first occurrence of a substring, or false.

Parameters:

• $haystack (string)
• $needle (string)
• $before_needle (bool), default false, optional

Returns: mixed

Availability

• Compiled (AOT): supported by the Elephc code generator.
• eval() (magician interpreter): supported — declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/string/strstr.rs).

No examples yet — check examples/ and showcases/ for usage patterns.

Internals

For how strstr is implemented in the compiler, see the internals page.