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<?php function genRand($length = 10, $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ') { $randomString = ''; for ($i = 0; $i < $length; $i++) { $randomString .= $chars[rand(0, strlen($chars) - 1)]; } return $randomString; } function populate($count = 10000) { $array = array(); for($i = 0; $i < $count; $i++) { $phone = genRand(10,'0123456789'); $array[$phone] = array( 'phone' => $phone, 'name' => genRand(20), 'age' => genRand(2, '0123456789'), ); } return $array; } $array1 = populate(40000); $array2 = populate(40000); ksort($array1); ksort($array2); $matched = array_intersect_key($array1, $array2); print_r((!empty($matched) ? 'matched' : 'nope'));
Output for 7.0.1 - 7.0.3, 7.0.5 - 7.0.20, 7.1.0 - 7.1.26, 7.1.28 - 7.1.29, 7.1.31 - 7.1.32, 7.2.18 - 7.2.21, 7.2.23 - 7.2.25, 7.3.0, 7.3.3 - 7.3.7, 7.3.10 - 7.3.12, 7.4.0
nope
Output for 7.0.0, 7.0.4, 7.1.27, 7.1.30, 7.1.33, 7.2.17, 7.2.22, 7.3.1 - 7.3.2, 7.3.8 - 7.3.9
matched
Output for 5.4.0 - 5.4.2, 5.4.6 - 5.4.8, 5.4.10 - 5.4.12, 5.4.14 - 5.4.15, 5.4.18 - 5.4.45, 5.5.24 - 5.5.33, 5.5.35, 5.6.7 - 5.6.13, 5.6.15 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 320000 bytes) in /in/5jddb on line 27
Process exited with code 255.
Output for 5.4.13, 5.4.16 - 5.4.17, 5.5.34, 5.6.14
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 319992 bytes) in /in/5jddb on line 27
Process exited with code 255.
Output for 5.4.3 - 5.4.5, 5.4.9

Process exited with code 137.
Output for 5.3.7, 5.3.29
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 71 bytes) in /in/5jddb on line 15
Process exited with code 255.
Output for 5.3.10, 5.3.16, 5.3.22, 5.3.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/5jddb on line 6
Process exited with code 255.
Output for 5.3.8, 5.3.11, 5.3.13, 5.3.27
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 77 bytes) in /in/5jddb on line 16
Process exited with code 255.
Output for 5.3.12, 5.3.23 - 5.3.24, 5.3.26
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 63 bytes) in /in/5jddb on line 3
Process exited with code 255.
Output for 5.3.18, 5.3.20, 5.3.25
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 2 bytes) in /in/5jddb on line 6
Process exited with code 255.
Output for 5.3.21
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 17 bytes) in /in/5jddb on line 6
Process exited with code 255.
Output for 5.3.19
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 76 bytes) in /in/5jddb on line 17
Process exited with code 255.
Output for 5.3.9, 5.3.17
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 72 bytes) in /in/5jddb on line 16
Process exited with code 255.
Output for 5.3.14 - 5.3.15
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 75 bytes) in /in/5jddb on line 18
Process exited with code 255.
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