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php Programming Glossary: roomcopyPHP: check if object/array is a reference http://stackoverflow.com/questions/3148125/php-check-if-object-array-is-a-reference the array and then altering and testing each entry in turn roomCopy room foreach room as key val roomCopy key '_test' true if isset.. each entry in turn roomCopy room foreach room as key val roomCopy key '_test' true if isset room key '_test' It's a reference.. room key '_test' It's a reference unset room key unset roomCopy With your example data room 'furniture' and roomCopy 'furniture'..
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