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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); $match = FALSE; foreach($array1 as $key => $value) { if(array_key_exists($key, $array2)) { $match = TRUE; break 2; } } print_r(($match ? 'matched' : 'nope'));
Output for 5.4.1 - 5.4.2, 5.4.4 - 5.4.10, 5.4.12 - 5.4.19, 5.4.21 - 5.4.26, 5.4.28 - 5.4.30
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 320000 bytes) in /in/LeplW on line 27
Process exited with code 255.
Output for 5.4.0, 5.4.3, 5.4.11, 5.4.20, 5.4.27
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 319992 bytes) in /in/LeplW on line 27
Process exited with code 255.
Output for 5.3.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 75 bytes) in /in/LeplW on line 18
Process exited with code 255.
Output for 5.3.7 - 5.3.10, 5.3.19, 5.3.27
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 2 bytes) in /in/LeplW on line 6
Process exited with code 255.
Output for 5.3.21 - 5.3.22, 5.3.26
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 71 bytes) in /in/LeplW on line 15
Process exited with code 255.
Output for 5.3.13, 5.3.15, 5.3.24 - 5.3.25
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/LeplW on line 6
Process exited with code 255.
Output for 5.3.23
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 77 bytes) in /in/LeplW on line 16
Process exited with code 255.
Output for 5.3.16 - 5.3.17, 5.3.20

Process exited with code 137.
Output for 5.3.14, 5.3.18
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 63 bytes) in /in/LeplW on line 3
Process exited with code 255.
Output for 5.3.11 - 5.3.12
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 76 bytes) in /in/LeplW on line 17
Process exited with code 255.
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