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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); $matched = array_intersect_key($array1, $array2); print_r((!empty($matched) ? 'matched' : 'nope'));
Output for 5.4.1, 5.4.3 - 5.4.4, 5.4.6 - 5.4.10, 5.4.12 - 5.4.13, 5.4.15 - 5.4.19, 5.4.22, 5.4.24 - 5.4.35, 5.4.37 - 5.4.45, 5.5.0 - 5.5.10, 5.5.12 - 5.5.21, 5.5.23 - 5.5.26, 5.5.29 - 5.5.38, 5.6.0 - 5.6.2, 5.6.4 - 5.6.5, 5.6.7 - 5.6.8, 5.6.10 - 5.6.30, 7.0.0 - 7.0.9, 7.0.12 - 7.0.16, 7.0.18 - 7.0.20, 7.1.0 - 7.1.2, 7.1.4, 7.1.6 - 7.1.7
nope
Output for 5.4.0, 5.4.2, 5.4.5, 5.4.11, 5.4.14, 5.4.20 - 5.4.21, 5.4.23, 5.4.36, 5.5.11, 5.5.22, 5.5.27 - 5.5.28, 5.6.3, 5.6.6, 5.6.9, 7.0.10, 7.0.17, 7.1.3, 7.1.5
matched
Output for 7.0.11

Process exited with code 137.
Output for 5.3.0, 5.3.7 - 5.3.8, 5.3.12, 5.3.15, 5.3.25, 5.3.27 - 5.3.29
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/ShY3n on line 6
Process exited with code 255.
Output for 5.3.1, 5.3.3, 5.3.9, 5.3.13, 5.3.23, 5.3.26
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 2 bytes) in /in/ShY3n on line 6
Process exited with code 255.
Output for 5.3.6, 5.3.24
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 71 bytes) in /in/ShY3n on line 15
Process exited with code 255.
Output for 5.3.2, 5.3.4 - 5.3.5, 5.3.14, 5.3.22
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 77 bytes) in /in/ShY3n on line 16
Process exited with code 255.
Output for 5.3.20 - 5.3.21
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 63 bytes) in /in/ShY3n on line 3
Process exited with code 255.
Output for 5.3.19
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 82 bytes) in /in/ShY3n on line 15
Process exited with code 255.
Output for 5.3.16 - 5.3.18
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 75 bytes) in /in/ShY3n on line 18
Process exited with code 255.
Output for 5.3.11
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 72 bytes) in /in/ShY3n on line 16
Process exited with code 255.
Output for 5.3.10
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 76 bytes) in /in/ShY3n on line 17
Process exited with code 255.
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