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<?php function flatten(array $nestedArraysAndStrings){ $flat=[]; $iter = new RecursiveIteratorIterator( new RecursiveArrayIterator($nestedArraysAndStrings)); foreach($iter as $leaf){ $flat[] = $leaf; } return join(NULL, $flat); } $noRefs = [[[['some']]],[' nested ']," items n"]; $withRefs = []+$noRefs; $wat = $noRefs[0]; $withRefs[0] = &$wat; echo flatten($noRefs); echo flatten($withRefs);
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Deprecated: join(): Passing null to parameter #1 ($separator) of type array|string is deprecated in /in/up3me on line 8 some nested items n Deprecated: join(): Passing null to parameter #1 ($separator) of type array|string is deprecated in /in/up3me on line 8 some nested items n
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.1.14 - 7.1.33, 7.2.2 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
some nested items nsome nested items n
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.13, 7.2.0 - 7.2.1
some nested items n Notice: Array to string conversion in /in/up3me on line 8 Array nested items n
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/up3me on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/up3me on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/up3me on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/up3me on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/up3me on line 3
Process exited with code 255.
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