You want to extract the substrings between USD and Counter-Strike:. The targeted substrings in your sample data appear to not contain : so I will recommend a negated character class containing :. Using the \K (fullstring restart) and a positive lookahead, you can avoid bloating your output array and simply access the fullstring match [0] values. The optional equal symbol in your pattern seems completely unnecessary for your sample input, so =? should be removed. (Perhaps you were attempting to perform a lookbehind -- that is not the right syntax and \K avoids the pattern-slowing lookbehind anyhow.)
Pattern: array ( 0 => 'Clutch Case', 1 => 'Clutch Case Key', 2 => 'Spectrum 2 Case Key', 3 => 'Spectrum Case Key', 4 => 'AK-47 | Redline (Field-Tested)', 5 => 'Boston 2018 Attending Legends Autograph Capsule', 6 => 'Glove Case Key', 7 => 'Boston 2018 Returning Challengers Autograph Capsule', 8 => 'AK-47 | Frontside Misty (Field-Tested)', 9 => 'Gamma 2 Case Key', 10 => 'Gamma Case Key', 11 => 'AK-47 | Elite Build (Field-Tested)', 12 => 'AK-47 | Elite Build (Minimal Wear)', 13 => 'M4A4 | Desolate Space (Field-Tested)', 14 => 'AWP | Asiimov (Field-Tested)', 15 => 'Operation Hydra Case Key', 16 => 'AWP | Worm God (Minimal Wear)', 17 => 'AWP | Phobos (Minimal Wear)', 18 => 'AWP | Hyper Beast (Minimal Wear)', 19 => 'AWP | Fever Dream (Minimal Wear)', 20 => 'USP-S | Cortex (Field-Tested)', 21 => 'M4A4 | Evil Daimyo (Minimal Wear)', 22 => 'AWP | Mortis (Field-Tested)', 23 => 'Spectrum 2 Case', 24 => 'M4A1-S | Decimator (Field-Tested)', 25 => 'AWP | Mortis (Minimal Wear)', 26 => 'AK-47 | Bloodsport (Minimal Wear)', 27 => 'AWP | Worm God (Field-Tested)', 28 => 'AUG | Contractor (Field-Tested)', 29 => 'AK-47 | Elite Build (Well-Worn)', 30 => 'Operation Hydra Case', 31 => 'AWP | Fever Dream (Field-Tested)', 32 => 'USP-S | Cyrex (Minimal Wear)', 33 => 'USP-S | Cyrex (Field-Tested)', 34 => 'AWP | Asiimov (Battle-Scarred)', 35 => 'AWP | Man-o\'-war (Minimal Wear)', 36 => 'Name Tag', 37 => 'M4A1-S | Leaded Glass (Field-Tested)', 38 => 'AK-47 | Aquamarine Revenge (Field-Tested)', 39 => 'AWP | Asiimov (Well-Worn)', 40 => 'AWP | Sun in Leo (Minimal Wear)', 41 => 'Glock-18 | Water Elemental (Field-Tested)', 42 => 'AK-47 | Orbit Mk01 (Minimal Wear)', 43 => 'AWP | Mortis (Factory New)', 44 => 'M4A4 | Evil Daimyo (Field-Tested)', 45 => 'AWP | Worm God (Factory New)', 46 => 'AWP | Phobos (Field-Tested)', 47 => 'AWP | Pit Viper (Field-Tested)', 48 => 'Operation Bravo Case', 49 => 'Operation Phoenix Case Key', 50 => 'AK-47 | Emerald Pinstripe (Field-Tested)', 51 => 'AK-47 | Orbit Mk01 (Field-Tested)', 52 => 'M4A1-S | Hyper Beast (Field-Tested)', 53 => 'AWP | Sun in Leo (Field-Tested)', 54 => 'M4A4 | 龍王 (Dragon King) (Field-Tested)', 55 => 'AWP | Redline (Field-Tested)', 56 => 'AK-47 | Neon Revolution (Field-Tested)', 57 => 'Shadow Case Key', 58 => 'Chroma 2 Case Key', 59 => 'Huntsman Weapon Case', 60 => 'StatTrak™ AK-47 | Elite Build (Well-Worn)', 61 => 'Glock-18 | Moonrise (Field-Tested)', 62 => 'M4A4 | Desolate Space (Minimal Wear)', 63 => 'M4A4 | Desolate Space (Well-Worn)', 64 => 'AWP | Pit Viper (Minimal Wear)', 65 => 'Operation Breakout Case Key', 66 => 'Glock-18 | Water Elemental (Minimal Wear)', 67 => 'AWP | Elite Build (Field-Tested)', 68 => 'M4A1-S | Hyper Beast (Minimal Wear)', 69 => 'Desert Eagle | Conspiracy (Minimal Wear)', 70 => 'M4A1-S | Decimator (Minimal Wear)', 71 => 'USP-S | Guardian (Factory New)', 72 => 'AK-47 | Point Disarray (Field-Tested)', 73 => 'M4A1-S | Flashback (Field-Tested)', 74 => 'USP-S | Blueprint (Field-Tested)', 75 => 'M4A4 | Griffin (Minimal Wear)', 76 => 'Operation Wildfire Case Key', 77 => 'AK-47 | Safari Mesh (Field-Tested)', 78 => 'Falchion Case Key', 79 => 'AK-47 | Vulcan (Field-Tested)', 80 => 'AWP | Redline (Minimal Wear)', 81 => 'Five-SeveN | Monkey Business (Field-Tested)', 82 => 'AK-47 | Elite Build (Battle-Scarred)', 83 => 'Chroma Case Key', 84 => 'StatTrak™ AK-47 | Elite Build (Field-Tested)', 85 => 'AK-47 | Cartel (Field-Tested)', 86 => 'AWP | Phobos (Factory New)', 87 => 'AK-47 | Aquamarine Revenge (Minimal Wear)', 88 => 'USP-S | Guardian (Minimal Wear)', 89 => 'AWP | BOOM (Minimal Wear)', 90 => 'M4A1-S | Flashback (Minimal Wear)', 91 => 'USP-S | Torque (Factory New)', 92 => 'USP-S | Torque (Minimal Wear)', 93 => 'Desert Eagle | Kumicho Dragon (Field-Tested)', 94 => 'M4A1-S | Cyrex (Minimal Wear)', 95 => 'M4A4 | Evil Daimyo (Factory New)', 96 => 'AK-47 | Blue Laminate (Minimal Wear)', 97 => 'Desert Eagle | Oxide Blaze (Factory New)', 98 => 'M4A4 | 龍王 (Dragon King) (Minimal Wear)', 99 => 'AK-47 | Orbit Mk01 (Factory New)', ) 1 (Pattern Demo)
Code: (Demo)
Output: (100 matches)
array ( 0 => 'Clutch Case', 1 => 'Clutch Case Key', 2 => 'Spectrum 2 Case Key', 3 => 'Spectrum Case Key', 4 => 'AK-47 | Redline (Field-Tested)', 5 => 'Boston 2018 Attending Legends Autograph Capsule', 6 => 'Glove Case Key', 7 => 'Boston 2018 Returning Challengers Autograph Capsule', 8 => 'AK-47 | Frontside Misty (Field-Tested)', 9 => 'Gamma 2 Case Key', 10 => 'Gamma Case Key', 11 => 'AK-47 | Elite Build (Field-Tested)', 12 => 'AK-47 | Elite Build (Minimal Wear)', 13 => 'M4A4 | Desolate Space (Field-Tested)', 14 => 'AWP | Asiimov (Field-Tested)', 15 => 'Operation Hydra Case Key', 16 => 'AWP | Worm God (Minimal Wear)', 17 => 'AWP | Phobos (Minimal Wear)', 18 => 'AWP | Hyper Beast (Minimal Wear)', 19 => 'AWP | Fever Dream (Minimal Wear)', 20 => 'USP-S | Cortex (Field-Tested)', 21 => 'M4A4 | Evil Daimyo (Minimal Wear)', 22 => 'AWP | Mortis (Field-Tested)', 23 => 'Spectrum 2 Case', 24 => 'M4A1-S | Decimator (Field-Tested)', 25 => 'AWP | Mortis (Minimal Wear)', 26 => 'AK-47 | Bloodsport (Minimal Wear)', 27 => 'AWP | Worm God (Field-Tested)', 28 => 'AUG | Contractor (Field-Tested)', 29 => 'AK-47 | Elite Build (Well-Worn)', 30 => 'Operation Hydra Case', 31 => 'AWP | Fever Dream (Field-Tested)', 32 => 'USP-S | Cyrex (Minimal Wear)', 33 => 'USP-S | Cyrex (Field-Tested)', 34 => 'AWP | Asiimov (Battle-Scarred)', 35 => 'AWP | Man-o\'-war (Minimal Wear)', 36 => 'Name Tag', 37 => 'M4A1-S | Leaded Glass (Field-Tested)', 38 => 'AK-47 | Aquamarine Revenge (Field-Tested)', 39 => 'AWP | Asiimov (Well-Worn)', 40 => 'AWP | Sun in Leo (Minimal Wear)', 41 => 'Glock-18 | Water Elemental (Field-Tested)', 42 => 'AK-47 | Orbit Mk01 (Minimal Wear)', 43 => 'AWP | Mortis (Factory New)', 44 => 'M4A4 | Evil Daimyo (Field-Tested)', 45 => 'AWP | Worm God (Factory New)', 46 => 'AWP | Phobos (Field-Tested)', 47 => 'AWP | Pit Viper (Field-Tested)', 48 => 'Operation Bravo Case', 49 => 'Operation Phoenix Case Key', 50 => 'AK-47 | Emerald Pinstripe (Field-Tested)', 51 => 'AK-47 | Orbit Mk01 (Field-Tested)', 52 => 'M4A1-S | Hyper Beast (Field-Tested)', 53 => 'AWP | Sun in Leo (Field-Tested)', 54 => 'M4A4 | 龍王 (Dragon King) (Field-Tested)', 55 => 'AWP | Redline (Field-Tested)', 56 => 'AK-47 | Neon Revolution (Field-Tested)', 57 => 'Shadow Case Key', 58 => 'Chroma 2 Case Key', 59 => 'Huntsman Weapon Case', 60 => 'StatTrak™ AK-47 | Elite Build (Well-Worn)', 61 => 'Glock-18 | Moonrise (Field-Tested)', 62 => 'M4A4 | Desolate Space (Minimal Wear)', 63 => 'M4A4 | Desolate Space (Well-Worn)', 64 => 'AWP | Pit Viper (Minimal Wear)', 65 => 'Operation Breakout Case Key', 66 => 'Glock-18 | Water Elemental (Minimal Wear)', 67 => 'AWP | Elite Build (Field-Tested)', 68 => 'M4A1-S | Hyper Beast (Minimal Wear)', 69 => 'Desert Eagle | Conspiracy (Minimal Wear)', 70 => 'M4A1-S | Decimator (Minimal Wear)', 71 => 'USP-S | Guardian (Factory New)', 72 => 'AK-47 | Point Disarray (Field-Tested)', 73 => 'M4A1-S | Flashback (Field-Tested)', 74 => 'USP-S | Blueprint (Field-Tested)', 75 => 'M4A4 | Griffin (Minimal Wear)', 76 => 'Operation Wildfire Case Key', 77 => 'AK-47 | Safari Mesh (Field-Tested)', 78 => 'Falchion Case Key', 79 => 'AK-47 | Vulcan (Field-Tested)', 80 => 'AWP | Redline (Minimal Wear)', 81 => 'Five-SeveN | Monkey Business (Field-Tested)', 82 => 'AK-47 | Elite Build (Battle-Scarred)', 83 => 'Chroma Case Key', 84 => 'StatTrak™ AK-47 | Elite Build (Field-Tested)', 85 => 'AK-47 | Cartel (Field-Tested)', 86 => 'AWP | Phobos (Factory New)', 87 => 'AK-47 | Aquamarine Revenge (Minimal Wear)', 88 => 'USP-S | Guardian (Minimal Wear)', 89 => 'AWP | BOOM (Minimal Wear)', 90 => 'M4A1-S | Flashback (Minimal Wear)', 91 => 'USP-S | Torque (Factory New)', 92 => 'USP-S | Torque (Minimal Wear)', 93 => 'Desert Eagle | Kumicho Dragon (Field-Tested)', 94 => 'M4A1-S | Cyrex (Minimal Wear)', 95 => 'M4A4 | Evil Daimyo (Factory New)', 96 => 'AK-47 | Blue Laminate (Minimal Wear)', 97 => 'Desert Eagle | Oxide Blaze (Factory New)', 98 => 'M4A4 | 龍王 (Dragon King) (Minimal Wear)', 99 => 'AK-47 | Orbit Mk01 (Factory New)', )If you find that your actual target substrings may contain : then you can replace the negated character class with a array ( 0 => 'Clutch Case', 1 => 'Clutch Case Key', 2 => 'Spectrum 2 Case Key', 3 => 'Spectrum Case Key', 4 => 'AK-47 | Redline (Field-Tested)', 5 => 'Boston 2018 Attending Legends Autograph Capsule', 6 => 'Glove Case Key', 7 => 'Boston 2018 Returning Challengers Autograph Capsule', 8 => 'AK-47 | Frontside Misty (Field-Tested)', 9 => 'Gamma 2 Case Key', 10 => 'Gamma Case Key', 11 => 'AK-47 | Elite Build (Field-Tested)', 12 => 'AK-47 | Elite Build (Minimal Wear)', 13 => 'M4A4 | Desolate Space (Field-Tested)', 14 => 'AWP | Asiimov (Field-Tested)', 15 => 'Operation Hydra Case Key', 16 => 'AWP | Worm God (Minimal Wear)', 17 => 'AWP | Phobos (Minimal Wear)', 18 => 'AWP | Hyper Beast (Minimal Wear)', 19 => 'AWP | Fever Dream (Minimal Wear)', 20 => 'USP-S | Cortex (Field-Tested)', 21 => 'M4A4 | Evil Daimyo (Minimal Wear)', 22 => 'AWP | Mortis (Field-Tested)', 23 => 'Spectrum 2 Case', 24 => 'M4A1-S | Decimator (Field-Tested)', 25 => 'AWP | Mortis (Minimal Wear)', 26 => 'AK-47 | Bloodsport (Minimal Wear)', 27 => 'AWP | Worm God (Field-Tested)', 28 => 'AUG | Contractor (Field-Tested)', 29 => 'AK-47 | Elite Build (Well-Worn)', 30 => 'Operation Hydra Case', 31 => 'AWP | Fever Dream (Field-Tested)', 32 => 'USP-S | Cyrex (Minimal Wear)', 33 => 'USP-S | Cyrex (Field-Tested)', 34 => 'AWP | Asiimov (Battle-Scarred)', 35 => 'AWP | Man-o\'-war (Minimal Wear)', 36 => 'Name Tag', 37 => 'M4A1-S | Leaded Glass (Field-Tested)', 38 => 'AK-47 | Aquamarine Revenge (Field-Tested)', 39 => 'AWP | Asiimov (Well-Worn)', 40 => 'AWP | Sun in Leo (Minimal Wear)', 41 => 'Glock-18 | Water Elemental (Field-Tested)', 42 => 'AK-47 | Orbit Mk01 (Minimal Wear)', 43 => 'AWP | Mortis (Factory New)', 44 => 'M4A4 | Evil Daimyo (Field-Tested)', 45 => 'AWP | Worm God (Factory New)', 46 => 'AWP | Phobos (Field-Tested)', 47 => 'AWP | Pit Viper (Field-Tested)', 48 => 'Operation Bravo Case', 49 => 'Operation Phoenix Case Key', 50 => 'AK-47 | Emerald Pinstripe (Field-Tested)', 51 => 'AK-47 | Orbit Mk01 (Field-Tested)', 52 => 'M4A1-S | Hyper Beast (Field-Tested)', 53 => 'AWP | Sun in Leo (Field-Tested)', 54 => 'M4A4 | 龍王 (Dragon King) (Field-Tested)', 55 => 'AWP | Redline (Field-Tested)', 56 => 'AK-47 | Neon Revolution (Field-Tested)', 57 => 'Shadow Case Key', 58 => 'Chroma 2 Case Key', 59 => 'Huntsman Weapon Case', 60 => 'StatTrak™ AK-47 | Elite Build (Well-Worn)', 61 => 'Glock-18 | Moonrise (Field-Tested)', 62 => 'M4A4 | Desolate Space (Minimal Wear)', 63 => 'M4A4 | Desolate Space (Well-Worn)', 64 => 'AWP | Pit Viper (Minimal Wear)', 65 => 'Operation Breakout Case Key', 66 => 'Glock-18 | Water Elemental (Minimal Wear)', 67 => 'AWP | Elite Build (Field-Tested)', 68 => 'M4A1-S | Hyper Beast (Minimal Wear)', 69 => 'Desert Eagle | Conspiracy (Minimal Wear)', 70 => 'M4A1-S | Decimator (Minimal Wear)', 71 => 'USP-S | Guardian (Factory New)', 72 => 'AK-47 | Point Disarray (Field-Tested)', 73 => 'M4A1-S | Flashback (Field-Tested)', 74 => 'USP-S | Blueprint (Field-Tested)', 75 => 'M4A4 | Griffin (Minimal Wear)', 76 => 'Operation Wildfire Case Key', 77 => 'AK-47 | Safari Mesh (Field-Tested)', 78 => 'Falchion Case Key', 79 => 'AK-47 | Vulcan (Field-Tested)', 80 => 'AWP | Redline (Minimal Wear)', 81 => 'Five-SeveN | Monkey Business (Field-Tested)', 82 => 'AK-47 | Elite Build (Battle-Scarred)', 83 => 'Chroma Case Key', 84 => 'StatTrak™ AK-47 | Elite Build (Field-Tested)', 85 => 'AK-47 | Cartel (Field-Tested)', 86 => 'AWP | Phobos (Factory New)', 87 => 'AK-47 | Aquamarine Revenge (Minimal Wear)', 88 => 'USP-S | Guardian (Minimal Wear)', 89 => 'AWP | BOOM (Minimal Wear)', 90 => 'M4A1-S | Flashback (Minimal Wear)', 91 => 'USP-S | Torque (Factory New)', 92 => 'USP-S | Torque (Minimal Wear)', 93 => 'Desert Eagle | Kumicho Dragon (Field-Tested)', 94 => 'M4A1-S | Cyrex (Minimal Wear)', 95 => 'M4A4 | Evil Daimyo (Factory New)', 96 => 'AK-47 | Blue Laminate (Minimal Wear)', 97 => 'Desert Eagle | Oxide Blaze (Factory New)', 98 => 'M4A4 | 龍王 (Dragon King) (Minimal Wear)', 99 => 'AK-47 | Orbit Mk01 (Factory New)', ) 3 but this will impact efficiency slightly because greedy patterns outperform lazy patterns.
For your sample input, the case-insensitive pattern modifier (array ( 0 => 'Clutch Case', 1 => 'Clutch Case Key', 2 => 'Spectrum 2 Case Key', 3 => 'Spectrum Case Key', 4 => 'AK-47 | Redline (Field-Tested)', 5 => 'Boston 2018 Attending Legends Autograph Capsule', 6 => 'Glove Case Key', 7 => 'Boston 2018 Returning Challengers Autograph Capsule', 8 => 'AK-47 | Frontside Misty (Field-Tested)', 9 => 'Gamma 2 Case Key', 10 => 'Gamma Case Key', 11 => 'AK-47 | Elite Build (Field-Tested)', 12 => 'AK-47 | Elite Build (Minimal Wear)', 13 => 'M4A4 | Desolate Space (Field-Tested)', 14 => 'AWP | Asiimov (Field-Tested)', 15 => 'Operation Hydra Case Key', 16 => 'AWP | Worm God (Minimal Wear)', 17 => 'AWP | Phobos (Minimal Wear)', 18 => 'AWP | Hyper Beast (Minimal Wear)', 19 => 'AWP | Fever Dream (Minimal Wear)', 20 => 'USP-S | Cortex (Field-Tested)', 21 => 'M4A4 | Evil Daimyo (Minimal Wear)', 22 => 'AWP | Mortis (Field-Tested)', 23 => 'Spectrum 2 Case', 24 => 'M4A1-S | Decimator (Field-Tested)', 25 => 'AWP | Mortis (Minimal Wear)', 26 => 'AK-47 | Bloodsport (Minimal Wear)', 27 => 'AWP | Worm God (Field-Tested)', 28 => 'AUG | Contractor (Field-Tested)', 29 => 'AK-47 | Elite Build (Well-Worn)', 30 => 'Operation Hydra Case', 31 => 'AWP | Fever Dream (Field-Tested)', 32 => 'USP-S | Cyrex (Minimal Wear)', 33 => 'USP-S | Cyrex (Field-Tested)', 34 => 'AWP | Asiimov (Battle-Scarred)', 35 => 'AWP | Man-o\'-war (Minimal Wear)', 36 => 'Name Tag', 37 => 'M4A1-S | Leaded Glass (Field-Tested)', 38 => 'AK-47 | Aquamarine Revenge (Field-Tested)', 39 => 'AWP | Asiimov (Well-Worn)', 40 => 'AWP | Sun in Leo (Minimal Wear)', 41 => 'Glock-18 | Water Elemental (Field-Tested)', 42 => 'AK-47 | Orbit Mk01 (Minimal Wear)', 43 => 'AWP | Mortis (Factory New)', 44 => 'M4A4 | Evil Daimyo (Field-Tested)', 45 => 'AWP | Worm God (Factory New)', 46 => 'AWP | Phobos (Field-Tested)', 47 => 'AWP | Pit Viper (Field-Tested)', 48 => 'Operation Bravo Case', 49 => 'Operation Phoenix Case Key', 50 => 'AK-47 | Emerald Pinstripe (Field-Tested)', 51 => 'AK-47 | Orbit Mk01 (Field-Tested)', 52 => 'M4A1-S | Hyper Beast (Field-Tested)', 53 => 'AWP | Sun in Leo (Field-Tested)', 54 => 'M4A4 | 龍王 (Dragon King) (Field-Tested)', 55 => 'AWP | Redline (Field-Tested)', 56 => 'AK-47 | Neon Revolution (Field-Tested)', 57 => 'Shadow Case Key', 58 => 'Chroma 2 Case Key', 59 => 'Huntsman Weapon Case', 60 => 'StatTrak™ AK-47 | Elite Build (Well-Worn)', 61 => 'Glock-18 | Moonrise (Field-Tested)', 62 => 'M4A4 | Desolate Space (Minimal Wear)', 63 => 'M4A4 | Desolate Space (Well-Worn)', 64 => 'AWP | Pit Viper (Minimal Wear)', 65 => 'Operation Breakout Case Key', 66 => 'Glock-18 | Water Elemental (Minimal Wear)', 67 => 'AWP | Elite Build (Field-Tested)', 68 => 'M4A1-S | Hyper Beast (Minimal Wear)', 69 => 'Desert Eagle | Conspiracy (Minimal Wear)', 70 => 'M4A1-S | Decimator (Minimal Wear)', 71 => 'USP-S | Guardian (Factory New)', 72 => 'AK-47 | Point Disarray (Field-Tested)', 73 => 'M4A1-S | Flashback (Field-Tested)', 74 => 'USP-S | Blueprint (Field-Tested)', 75 => 'M4A4 | Griffin (Minimal Wear)', 76 => 'Operation Wildfire Case Key', 77 => 'AK-47 | Safari Mesh (Field-Tested)', 78 => 'Falchion Case Key', 79 => 'AK-47 | Vulcan (Field-Tested)', 80 => 'AWP | Redline (Minimal Wear)', 81 => 'Five-SeveN | Monkey Business (Field-Tested)', 82 => 'AK-47 | Elite Build (Battle-Scarred)', 83 => 'Chroma Case Key', 84 => 'StatTrak™ AK-47 | Elite Build (Field-Tested)', 85 => 'AK-47 | Cartel (Field-Tested)', 86 => 'AWP | Phobos (Factory New)', 87 => 'AK-47 | Aquamarine Revenge (Minimal Wear)', 88 => 'USP-S | Guardian (Minimal Wear)', 89 => 'AWP | BOOM (Minimal Wear)', 90 => 'M4A1-S | Flashback (Minimal Wear)', 91 => 'USP-S | Torque (Factory New)', 92 => 'USP-S | Torque (Minimal Wear)', 93 => 'Desert Eagle | Kumicho Dragon (Field-Tested)', 94 => 'M4A1-S | Cyrex (Minimal Wear)', 95 => 'M4A4 | Evil Daimyo (Factory New)', 96 => 'AK-47 | Blue Laminate (Minimal Wear)', 97 => 'Desert Eagle | Oxide Blaze (Factory New)', 98 => 'M4A4 | 龍王 (Dragon King) (Minimal Wear)', 99 => 'AK-47 | Orbit Mk01 (Factory New)', ) 4) is not necessary. Removing it will improve pattern efficiency by 200steps and maintain the same level of accuracy. If case-insensitivity is necessary for your real data, you should keep the array ( 0 => 'Clutch Case', 1 => 'Clutch Case Key', 2 => 'Spectrum 2 Case Key', 3 => 'Spectrum Case Key', 4 => 'AK-47 | Redline (Field-Tested)', 5 => 'Boston 2018 Attending Legends Autograph Capsule', 6 => 'Glove Case Key', 7 => 'Boston 2018 Returning Challengers Autograph Capsule', 8 => 'AK-47 | Frontside Misty (Field-Tested)', 9 => 'Gamma 2 Case Key', 10 => 'Gamma Case Key', 11 => 'AK-47 | Elite Build (Field-Tested)', 12 => 'AK-47 | Elite Build (Minimal Wear)', 13 => 'M4A4 | Desolate Space (Field-Tested)', 14 => 'AWP | Asiimov (Field-Tested)', 15 => 'Operation Hydra Case Key', 16 => 'AWP | Worm God (Minimal Wear)', 17 => 'AWP | Phobos (Minimal Wear)', 18 => 'AWP | Hyper Beast (Minimal Wear)', 19 => 'AWP | Fever Dream (Minimal Wear)', 20 => 'USP-S | Cortex (Field-Tested)', 21 => 'M4A4 | Evil Daimyo (Minimal Wear)', 22 => 'AWP | Mortis (Field-Tested)', 23 => 'Spectrum 2 Case', 24 => 'M4A1-S | Decimator (Field-Tested)', 25 => 'AWP | Mortis (Minimal Wear)', 26 => 'AK-47 | Bloodsport (Minimal Wear)', 27 => 'AWP | Worm God (Field-Tested)', 28 => 'AUG | Contractor (Field-Tested)', 29 => 'AK-47 | Elite Build (Well-Worn)', 30 => 'Operation Hydra Case', 31 => 'AWP | Fever Dream (Field-Tested)', 32 => 'USP-S | Cyrex (Minimal Wear)', 33 => 'USP-S | Cyrex (Field-Tested)', 34 => 'AWP | Asiimov (Battle-Scarred)', 35 => 'AWP | Man-o\'-war (Minimal Wear)', 36 => 'Name Tag', 37 => 'M4A1-S | Leaded Glass (Field-Tested)', 38 => 'AK-47 | Aquamarine Revenge (Field-Tested)', 39 => 'AWP | Asiimov (Well-Worn)', 40 => 'AWP | Sun in Leo (Minimal Wear)', 41 => 'Glock-18 | Water Elemental (Field-Tested)', 42 => 'AK-47 | Orbit Mk01 (Minimal Wear)', 43 => 'AWP | Mortis (Factory New)', 44 => 'M4A4 | Evil Daimyo (Field-Tested)', 45 => 'AWP | Worm God (Factory New)', 46 => 'AWP | Phobos (Field-Tested)', 47 => 'AWP | Pit Viper (Field-Tested)', 48 => 'Operation Bravo Case', 49 => 'Operation Phoenix Case Key', 50 => 'AK-47 | Emerald Pinstripe (Field-Tested)', 51 => 'AK-47 | Orbit Mk01 (Field-Tested)', 52 => 'M4A1-S | Hyper Beast (Field-Tested)', 53 => 'AWP | Sun in Leo (Field-Tested)', 54 => 'M4A4 | 龍王 (Dragon King) (Field-Tested)', 55 => 'AWP | Redline (Field-Tested)', 56 => 'AK-47 | Neon Revolution (Field-Tested)', 57 => 'Shadow Case Key', 58 => 'Chroma 2 Case Key', 59 => 'Huntsman Weapon Case', 60 => 'StatTrak™ AK-47 | Elite Build (Well-Worn)', 61 => 'Glock-18 | Moonrise (Field-Tested)', 62 => 'M4A4 | Desolate Space (Minimal Wear)', 63 => 'M4A4 | Desolate Space (Well-Worn)', 64 => 'AWP | Pit Viper (Minimal Wear)', 65 => 'Operation Breakout Case Key', 66 => 'Glock-18 | Water Elemental (Minimal Wear)', 67 => 'AWP | Elite Build (Field-Tested)', 68 => 'M4A1-S | Hyper Beast (Minimal Wear)', 69 => 'Desert Eagle | Conspiracy (Minimal Wear)', 70 => 'M4A1-S | Decimator (Minimal Wear)', 71 => 'USP-S | Guardian (Factory New)', 72 => 'AK-47 | Point Disarray (Field-Tested)', 73 => 'M4A1-S | Flashback (Field-Tested)', 74 => 'USP-S | Blueprint (Field-Tested)', 75 => 'M4A4 | Griffin (Minimal Wear)', 76 => 'Operation Wildfire Case Key', 77 => 'AK-47 | Safari Mesh (Field-Tested)', 78 => 'Falchion Case Key', 79 => 'AK-47 | Vulcan (Field-Tested)', 80 => 'AWP | Redline (Minimal Wear)', 81 => 'Five-SeveN | Monkey Business (Field-Tested)', 82 => 'AK-47 | Elite Build (Battle-Scarred)', 83 => 'Chroma Case Key', 84 => 'StatTrak™ AK-47 | Elite Build (Field-Tested)', 85 => 'AK-47 | Cartel (Field-Tested)', 86 => 'AWP | Phobos (Factory New)', 87 => 'AK-47 | Aquamarine Revenge (Minimal Wear)', 88 => 'USP-S | Guardian (Minimal Wear)', 89 => 'AWP | BOOM (Minimal Wear)', 90 => 'M4A1-S | Flashback (Minimal Wear)', 91 => 'USP-S | Torque (Factory New)', 92 => 'USP-S | Torque (Minimal Wear)', 93 => 'Desert Eagle | Kumicho Dragon (Field-Tested)', 94 => 'M4A1-S | Cyrex (Minimal Wear)', 95 => 'M4A4 | Evil Daimyo (Factory New)', 96 => 'AK-47 | Blue Laminate (Minimal Wear)', 97 => 'Desert Eagle | Oxide Blaze (Factory New)', 98 => 'M4A4 | 龍王 (Dragon King) (Minimal Wear)', 99 => 'AK-47 | Orbit Mk01 (Factory New)', ) 4 flag; otherwise drop it.