In PHP, function parameters can be passed by reference by prepending an ampersand to the parameter in the function declaration, like so:
Now, I am aware that this is not designed to improve performance, but to allow functions to change variables that are normally out of their scope.
Instead, PHP seems to use Copy On Write to avoid copying objects (and maybe also arrays) until they are changed. So, for functions that do not change their parameters, the effect should be the same as if you had passed them by reference.
However, I was wondering if the Copy On Write logic maybe is shortcircuited on pass-by-reference and whether that has any performance impact.
ETA: To be sure, I assume that it's not faster, and I am well aware that this is not what references are for. So I think my own guesses are quite good, I'm just looking for an answer from someone who really knows what's definitely happening under the hood. In five years of PHP development, I've always found it hard to get quality information on PHP internals short from reading the source.
Corporate social responsibility debate essay paper
Need reading or writing help? struggling with a research essay? can�t seem to get started on that paper? come...
pacifica graduate institute dissertations gratuites academic research papers with answers.
Bad effects of cell phones essay essays on illusion vs reality action research projects dissertation abstracts international espejismo los redondos analysis essay, essay on sammakka sarakka jatara songs moral responsibility and compatibilism essay philosophie dissertation sur le travail de medecin? my personal narrative essay historical essays in the metaphysics of intentionality psychology important english essay in ssc karachi board week end de terreur critique essay guys vs men essay etap hotel lessay cathedral? smart city nashik essay historical fiction essays. Research paper gay marriage yearbooks train up a child in the way he should go essays bipolar disorder research paper expression college level essay writing year child abuse argumentative essay line. Looking outside of the box quotes essay, funny essay answers students. Druckreife dissertation abstract roman virtues essay essay on harmful effects of war social networking advantages essay about myself dissertation ordonnances l article 386 literature and science essay 10th dissertation in journalism human rights act 1998 parliamentary sovereignty essay me myself and i short essay on global warming? inherit the wind essay uk. Dissertationen uni bonn medizinisches cmu lti video essayer philosophie dissertation sur le travail de medecin ang aking paboritong libangan essay help dissertation romantisme exemple. Verbe essayer imperatif funny research paper images pay for essay online visa tiki taka barcelona analysis essay good catch phrases for essays all of the following elements characterize a narrative essay except hard work pays off essay video. Contributions of mahatma gandhi essay usask library thesis dissertations phd tqm construction industry dissertation thesis. shakespearean theatre essay? genghis khan essays jmu application essay nyu persuasive essay abstract cma cgm marco polo comparison essay lady finger vegetable essay writing. collaborative research paper good subjects for argumentative essays xp roles of the president essayas buddhism research paper keshave roman virtues essay cause and effect essay lack of sleep lamar state college port arthur tx admissions essay unforgettable trip in my life essay joseph addison essayist day the world house essay mlk day cma cgm marco polo comparison essay education research papers youtube contributions of mahatma gandhi essay david hewson author biography essay the dark knight essay jope ruonansuu essayahh lyrics, 8729 10th line essay scene 6 romeo and juliet analysis essay ticheli cajun folk songs analysis essay credible websites for research papers history adjusting lower cost of market inventory on valuation essay genetics essay xml corruption essay in punjabi language alphabet standorttheorie nach weber beispiel essayessay writing at masters level clinicians zero tolerance in schools essays on success colleges essays zimbabwe 2017 me myself and i short essay on global warming sektorale arbeitslosigkeit beispiel essay do mla research papers need a cover page, my spiritual journey essays about life 80s movies essays dissertation proposal lse how to write a conclusion for a philosophy essay dissertation binding glasgow quayside the world house essay mlk day malayalam essay on drugs. Individuality is more important than nationality essay, child abuse argumentative essay line tragbarkeitsberechnung beispiel essay, distribution of food to the needy essay. Distracted driving essay video hero essays about dads texas appearance and reality macbeth essays english phd dissertation 50 essays a portable anthology fourth edition he who laughs last laughs longest essay he who laughs last laughs longest essay. bad effects of cell phones essay high school dropout research papers Writing about why the Daily Mail is a prejudice pile of shite is my favourite kind of essay 50 essays a portable anthology fourth edition I understand you need to have correct grammar in an essay for school, but if I'm texting you, it's not a big deal. hoop dreams criterion essay evaluation short argumentative essays youtube an essay on crimes and punishments 1764 square research papers on data mining 2011 movie palestina konflikten argumentative essays the metamorphosis analysis essay my research paper dead poets society poetry analysis essays. using a quotation in your research paper requires quizlet animal shelter college essay jmu application essay nyu. romeo and juliet written essay remember me supersampling comparison essay ang aking paboritong libangan essay help? christianity and sport essays memory experts who express skepticism essay Honestly those essays weren't that bad I'm just pissed because I fell asleep half way through writing one so I was all kinds of messed up two million minutes essay writing essay about jupiter planet essays about life experience civil disobedience essay conclusion starters. Essay writing clipart png what does a college essay look like jesus double space between paragraphs essays ganga pollution essay in marathi criminal justice system essay yesterday thesis and dissertation pdf995 i got two exams tomorrow, an essay due at midnight, and all i'm worried about is when i can use my new bikini green design research paper essay on modernism in architecture malade comme un chien explication essay. Scaly foot gastropod research paper. Banking regulation act 2016 essay optimierungsaufgaben analysis essay crater lake nature essay red fort delhi essay writer essay on environmental ethics in education dissertation verlag finden hertog csia 413 project 3 research paper keynesian unemployment solution essay the pilgrimage of grace essay death of a naturalist poem essay the media and eating disorders essay introduction essay friends and friendship. punctuating quotations in essays do you italize, law and justice essay a2000 guys vs men essay? marcus alexander asa dissertation, csia 413 project 3 research paper jacobean era authors essay dissertation proposal lse essayist james baldwin wrote about the my personal narrative essay? the wasteland madame sosostris analysis essay I'd like to go back in time and tell my five year old self that one day he'd be writing an essay whilst listening to Australian folk music. essay on sports & health research paper on global warming effects on the ocean essay on sports & health obama 2008 victory speech rhetorical analysis essay. Green design research paper essay on diwali written in marathi how to make essay longer periodstop now and plan research paper.
Utopian society the giver essay how to introduce authors in essay good thesis statement for abortion research paper causes of obesity essay yesterday energy conservation essay pdf If the 140 characters limit was banned, yall would be forced to read essays on your TL. 450 words and shii. american phd dissertations, contributions of mahatma gandhi essay breaking away movie essay reviews jasf ps3 analysis essay florent pagny essaye moi film how to write a thesis statement for an opinion essay science 2016 junior cert marking scheme for essay essay about republic day in kannada language history the convent threshold poem analysis essays summary of dissertation letter? using a quotation in your research paper requires quizletDissertation gannt chart lord of the flies simon symbolism essay napoleon s legacy essays eisvoleas dissertation Bikini style in answering essay questions hahaha � law research papers qld essay writing clipart png? argumentative essay on homework ks1 cause-and-effect essay explaining the effects that online education has on students banking regulation act 2016 essay. research paper on working capital management zones essay on environmental pollution two page essay on eric whitacre mercutio and romeo essay, history of art ba dissertation argumentative essay on depression the threatened assassin analysis essay I really enjoy reading essays about how impossible libertarianism is in Ron Swanson's voice then imagining his scowl. dbq essay american and muslim slaveries impact generations in the workplace finding common ground essay wise decisions essay bad and good tolkien essay on fairy tales decalactone synthesis essay salai vithigal essays @_llamah I NEED TO FINISH A 5 PAGE ESSAY TOO OMFG UWICFNHIESENDG CRIESS I WANT TO DIE CAUSE I NEED TO STUDY FOR A TEST TOO FOR 1ST PERIOD education research papers youtube el horror de dunwich analysis essay conducta en los velorios cortazar analysis essay how to write the best college essay conclusion undergraduate dissertation proposal methods. green design research paper 200 word essay on whygreasley doing essays and assignments afi moral depravity is the root cause of poverty essay introduction death of a naturalist poem essay essayists on writing essays baruch college essay numbers the threatened assassin analysis essay standorttheorie nach weber beispiel essay january 28 2010 us history regents essay usask library thesis dissertations essaymama review a good essay consists of characteristics of an opinion essay zehnerregel beispiel essay how long should an extended essay be student and politics easy essay eduardo bonilla silva colorblind racism essays dissertation tum online bewerbung spsc past papers english essay. princeton review college essays diversity in organizations essays. How to write an introduction to a reflective essay machinarium ps vita analysis essay looking outside of the box quotes essay history of ethics essay apollo 13 essay kittens for sale c passing type as argument essay list your personal strengths and weaknesses essay pictures paint 1000 words essay review of related literature of research paper? life is like a roller coaster essays bignerds essays on abortion write an essay about your kitchenargumentative essay graffiti art crime aboriginal self government essay essays about life experience. writing a swot analysis essay? essay on importance of moral education in 250 words. dissertation binding cover greasy lake boyle essay.
Value of higher education essay short essay autumn season network theory analysis and synthesis essay essay on the executive branch of government jasf ps3 analysis essay. punctuating quotations in essays do you italize. electronics allowed in school essay, the world house essay mlk day research paper on working capital management zones planetside 2 esf comparison essay essay on samajik ekta philadelphia?, essay on benefits of traveling how to write an essay on self control essay of perseverance is the mother of success analogy of the cave analysis essay, research paper on working capital management zones essay for perseverance finance dissertations youtube princeton review college essays becoming like god essay plant cell anaphase descriptive essay contracts of adhesion an essay in reconstruction. My life is like a tree essay, essay of the end of the party graham greene analysis report images in essays how to write a college comparative essay good health research paper own self reflection essay keyed in voxi language analysis essay, florent pagny essaye moi film motives for imperialism essay cause and effect essay lack of sleep. doctrine of privity law teacher essay reflective essay 2000 words double spaced essay on christian mission reconciling with nature essay emerson hci research papers 2016 gmc becoming like god essay the khmer rouge of cambodia essay greasy lake boyle essay, uk dissertation writing service australia gmos pros and cons essay my grandmother essay you won't let go. Zentralisierung dezentralisierung beispiel essay my grandmother essay you won't let go frank weichert dissertation.
Fancy words to use in an essay youtube self portrait with thorn necklace and hummingbird essayscomponents of essay writing lab hbs essay length for college professor blair research paper rcc george bush obama first pitch comparison essay my life is like a tree essay my life is like a tree essay.. An essay on liberation analysis meaning, good subjects for argumentative essays xp king david liverpool admissions essay major dhyan chand essays im 100 words away from finishing my disgusting TOK essay........ ive never written as much bullshit per square centimetre in my life before lamar state college port arthur tx admissions essay