Description:
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I am getting a crash from PHP when I mistakenly attempt to read 1,761,607,681 bytes from an incoming socket. Now I would reasonably assume that since this is far above the memory limit set in my PHP.ini file 
memory_limit = 8M
I would expect it to stop before even attempting to allocate such a rediculous ammount of memory for the script. In this case it fails with a
FATAL:  emalloc() unable to allocate 1761607681 bytes. Should this be what it does? I would expect it to issue an ERROR as opposed to crashing.

Reproduce code:
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<?php
$fp=fsockopen("http://php.net");
$data=fread($fp,1761607681);
?>

Expected result:
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It would be expected to receive an error as opposed to PHP trying to allocate this memory

Actual result:
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Stated above, causes
FATAL: emalloc() could not......