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<?php function foo() { yield 'a'; yield 'b'; yield 'c'; yield 'd'; yield 'e'; } $items = foo(); foreach ( $items as $outer ) { echo "Outer element: $outer\n"; if ( $outer == 'c' ) { foreach ( $items as $inner ) { echo "Inner element: $inner\n"; } } }
Output for git.master, git.master_jit, rfc.property-hooks
Outer element: a Outer element: b Outer element: c Fatal error: Uncaught Exception: Cannot rewind a generator that was already run in /in/BYOmQ:8 Stack trace: #0 {main} thrown in /in/BYOmQ on line 8
Process exited with code 255.

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