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run code in 300+ PHP versions simultaneously
<?php $user_agent = 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.1) Gecko/20060601 Firefox/2.0.0.1 (Ubuntu-edgy)'; var_dump( strpos( $user_agent, 'Edg' ) ); var_dump( strpos( $user_agent, 'edg' ) );
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) int(91)

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