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<?php var_dump(explode(',', null)); var_dump(implode(',', array_merge(explode(',', null), array('1', '2'))));
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: explode(): Passing null to parameter #2 ($string) of type string is deprecated in /in/AIuGp on line 3 array(1) { [0]=> string(0) "" } Deprecated: explode(): Passing null to parameter #2 ($string) of type string is deprecated in /in/AIuGp on line 5 string(4) ",1,2"

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