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<?php $arr = [ 'foo', 'foo', 'bar', 'baz', 'baz' ]; $arr2 = []; foreach ($arr as $v) { $lower = mb_strtolower($item, 'utf-8'); foreach ($arr2 as $v2) { $lower2 = mb_strtolower($item, 'utf-8'); if ($lower === $lower2) { continue 2; } } $arr2[] = $v; } var_dump($arr);
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 array(5) { [0]=> string(3) "foo" [1]=> string(3) "foo" [2]=> string(3) "bar" [3]=> string(3) "baz" [4]=> string(3) "baz" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Deprecated: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1OmUQ on line 15 array(5) { [0]=> string(3) "foo" [1]=> string(3) "foo" [2]=> string(3) "bar" [3]=> string(3) "baz" [4]=> string(3) "baz" }
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $item in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 Warning: Undefined variable $item in /in/1OmUQ on line 13 Warning: Undefined variable $item in /in/1OmUQ on line 15 array(5) { [0]=> string(3) "foo" [1]=> string(3) "foo" [2]=> string(3) "bar" [3]=> string(3) "baz" [4]=> string(3) "baz" }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: item in /in/1OmUQ on line 13 Notice: Undefined variable: item in /in/1OmUQ on line 13 Notice: Undefined variable: item in /in/1OmUQ on line 15 Notice: Undefined variable: item in /in/1OmUQ on line 13 Notice: Undefined variable: item in /in/1OmUQ on line 15 Notice: Undefined variable: item in /in/1OmUQ on line 13 Notice: Undefined variable: item in /in/1OmUQ on line 15 Notice: Undefined variable: item in /in/1OmUQ on line 13 Notice: Undefined variable: item in /in/1OmUQ on line 15 array(5) { [0]=> string(3) "foo" [1]=> string(3) "foo" [2]=> string(3) "bar" [3]=> string(3) "baz" [4]=> string(3) "baz" }
Output for 7.3.32 - 7.3.33
array(5) { [0]=> string(3) "foo" [1]=> string(3) "foo" [2]=> string(3) "bar" [3]=> string(3) "baz" [4]=> string(3) "baz" }
preferences:
178.83 ms | 401 KiB | 172 Q