How to stop core file generation in the server from php?

Guys,

A core file records memory image of running process.when a php process is killed, apache creates core files under your account.These core files takes too much of space on server.There is no harm on deleting these files.You can get rid off these core files by modifying the httpd start up file.

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vi /usr/sbin/httpd and
ulimit -c 0 after the first "ulimit" counting from the last.
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PS: /usr/sbin/httpd is nothing but a bash script.

Try :)