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<?php // 标准array // $array = array(1024 * 1024); // array(); // for ($i = 0; $i < 1024 * 1024; ++$i) // $array[$i] = 0; // echo 'Standard array: '.memory_get_peak_usage(); // spl $SplFixedArray = new SplFixedArray(1024 * 1024); // array(); for ($i = 0; $i < 1024 * 1024; ++$i) $SplFixedArray[$i] = 0; echo 'SplFixedArray: '.memory_get_peak_usage();
Output for git.master
SplFixedArray: 17164784
Output for git.master_jit
Fatal error: Out of memory (allocated 2097152 bytes) (tried to allocate 16777216 bytes) in /in/4jPES on line 10 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for rfc.property-hooks
SplFixedArray: 17164736

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