{"id":3883,"date":"2022-05-19T11:20:21","date_gmt":"2022-05-19T11:20:21","guid":{"rendered":"http:\/\/the-codest.localhost\/blog\/why-do-we-need-symfony-polyfill-and-why-we-shouldnt\/"},"modified":"2026-04-28T14:07:09","modified_gmt":"2026-04-28T14:07:09","slug":"perche-abbiamo-bisogno-di-symfony-polyfill-e-perche-non-dovremmo-farlo","status":"publish","type":"post","link":"https:\/\/thecodest.co\/it\/blog\/why-do-we-need-symfony-polyfill-and-why-we-shouldnt\/","title":{"rendered":"Perch\u00e9 abbiamo bisogno di Symfony Polyfill (... e perch\u00e9 non dovremmo)"},"content":{"rendered":"<p>Nella maggior parte dei moderni <strong><a href=\"https:\/\/thecodest.co\/it\/dictionary\/how-to-hire-a-php-developer\/\">PHP<\/a> progetti<\/strong>si noter\u00e0 una forte dipendenza dal file <a href=\"https:\/\/github.com\/symfony\/polyfill\" rel=\"nofollow\">Polifill di Symfony<\/a> biblioteca. In questo articolo, spiegheremo non solo come funziona e come si relaziona con <strong>Progetti Symfony<\/strong>ma approfondiremo anche l'idea del problema che cerca di risolvere.<\/p>\n<h2>Un po' di storia<\/h2>\n<p><strong>PHP<\/strong> era in cattive acque da molto tempo. Era il 2005 quando Andrei Zmievski ha avviato un'iniziativa di <a href=\"https:\/\/thecodest.co\/it\/dictionary\/why-do-projects-fail\/\">progetto<\/a> per portare il supporto nativo Unicode per <strong>PHP<\/strong> a causa di recensioni contrastanti e di molte preoccupazioni che <strong>PHP<\/strong> sta andando nella direzione sbagliata. Sviluppo di <strong>PHP<\/strong> La 6.x \u00e8 stata avviata. Ma non fu mai terminato - e questa \u00e8 una storia per un altro giorno. 10 anni dopo, da qualche parte tra il 2014 e il 2015, Dmitry Stogov, Xinchen Hui e Nikita Popov avviarono <code>phpng<\/code> - che ha ottimizzato e rifattorizzato il motore Zend interno utilizzato da <strong>PHP<\/strong>.<\/p>\n<h4>&gt;_ <em>\u00c8 nato l'PHP 7<\/em><\/h4>\n<p>E per gli anni passati, <strong>PHP<\/strong> sta crescendo pi\u00f9 velocemente che mai, attualmente alla versione stabile 8.1.<\/p>\n<p><img decoding=\"async\" src=\"\/app\/uploads\/2024\/05\/162561908-025b0d15-1b7a-4592-8f81-05c7b29bc3c9.png\" alt=\"immagine\" \/><\/p>\n<p>A causa del rapido sviluppo di nuove funzionalit\u00e0 nel linguaggio, non solo gli sviluppatori hanno dovuto adattarsi a tali cambiamenti, ma anche le infrastrutture e i servizi di hosting.<\/p>\n<p>Per garantire che noi sviluppatori possiamo utilizzare le nuove e migliori funzionalit\u00e0 del nostro amato linguaggio di programmazione. <strong>Polifill di Symfony<\/strong> \u00e8 nato il progetto.<\/p>\n<h2>Symfony Polyfill e le sue funzioni<\/h2>\n<blockquote>\n<p>Questo progetto fa da backport alle funzionalit\u00e0 presenti nell'ultima versione di <strong>Versioni PHP<\/strong> e fornisce livelli di compatibilit\u00e0 per alcune estensioni e funzioni. \u00c8 destinato a essere usato quando la portabilit\u00e0 attraverso <strong>Versioni PHP<\/strong> e le estensioni.<\/p>\n<\/blockquote>\n<p>Questa \u00e8 una pura descrizione di <a href=\"https:\/\/github.com\/symfony\/polyfill\" rel=\"nofollow\">Polifill di Symfony<\/a> ma cosa significa? <\/p>\n<p>A causa della rapida evoluzione <strong>Lingua PHP<\/strong> e la personalizzazione del software degli ISP, la maggior parte degli sviluppatori si \u00e8 trovata di fronte a una scelta semplice:<\/p>\n<ul>\n<li>Come <a href=\"https:\/\/thecodest.co\/it\/blog\/hire-vue-js-developers\/\">sviluppatore<\/a>Creo applicazioni in una versione precedente di <strong>PHP<\/strong> e non pu\u00f2 utilizzare le ultime funzionalit\u00e0 del linguaggio, oppure<\/li>\n<li>Come sviluppatore, creo un'applicazione moderna utilizzando l'ultima versione di <strong>PHP<\/strong>.<\/li>\n<\/ul>\n<p>Ma dovevano mantenere la compatibilit\u00e0 con gli altri strumenti e servizi gi\u00e0 utilizzati sia sul <a href=\"https:\/\/thecodest.co\/it\/dictionary\/what-is-code-refactoring\/\">codice<\/a> e dell'infrastruttura, quasi sempre utilizzando vecchie versioni di <strong>PHP<\/strong>Devo forse menzionare, caro lettore, il cosiddetto \"fattore divertimento\" di queste due soluzioni?<\/p>\n<p>Per facilitare la strada agli sviluppatori, nel 2015 la comunit\u00e0 Open Source ha realizzato <a href=\"https:\/\/github.com\/symfony\/polyfill\/tree\/v1.0.0\" rel=\"nofollow\">la prima versione stabile di Polyfill numerata 1.0<\/a>. La vita degli sviluppatori \u00e8 diventata pi\u00f9 semplice e si pu\u00f2 dire che Symfony Polyfill ha risolto una moltitudine di problemi, come la portabilit\u00e0 del codice tra piattaforme diverse, <strong>Versione PHP<\/strong> e ha reso molto pi\u00f9 semplice il refactoring delle applicazioni e la riduzione del debito tecnologico.<\/p>\n<p>Purtroppo, non tutti i problemi possono essere risolti con un unico strumento.<\/p>\n<h2>Problemi associati al mantenimento di pi\u00f9 versioni dell'ambiente<\/h2>\n<p>Per i complessi <strong>Progetti IT<\/strong>Il mantenimento di diverse versioni di ambienti per diversi clienti\/filiali\/dipartimenti \u00e8 una procedura comune. Ci\u00f2 comporta la necessit\u00e0 di sviluppare contemporaneamente molti rami diversi di applicazioni, spesso con requisiti funzionali diversi e con una propria trazione. Ho affrontato molte volte il problema di mantenere la stessa applicazione per diversi clienti su diversi ambienti PHP5 \/ PHP7 e la moltitudine di problemi legati all'incompatibilit\u00e0 delle librerie o delle loro dipendenze per le diverse versioni \u00e8 semplicemente irrisolvibile utilizzando solo <strong>Polifill di Symfony<\/strong>.<\/p>\n<h2>Il divario di competenze tra i membri del team di sviluppo<\/h2>\n<p>A causa della rapida crescita delle funzionalit\u00e0 integrate in <strong>PHP<\/strong>Molti sviluppatori non hanno seguito il ritmo del cambiamento. Molte delle funzionalit\u00e0 offerte nelle versioni superiori di <strong>PHP<\/strong> sono facilmente realizzabili con librerie esterne, oppure gli sviluppatori semplicemente non avevano bisogno delle nuove funzionalit\u00e0, come ad esempio <a href=\"https:\/\/www.php.net\/manual\/en\/language.fibers.php\" rel=\"nofollow\">Fibre PHP<\/a>. Quando si seleziona <a href=\"https:\/\/thecodest.co\/it\/blog\/how-to-hire-the-best-outsourced-development-team-for-a-scaleup\/\">squadra<\/a> \u00c8 una buona idea assicurarsi che le competenze siano adeguate o che il processo di consegna del codice sia reso pi\u00f9 coerente da strumenti di analisi statica e dal rilevamento precoce degli errori di regressione di versione.<\/p>\n<h2>Riluttanza al cambiamento<\/h2>\n<p><img decoding=\"async\" src=\"\/app\/uploads\/2024\/05\/168078028-edd8afe9-04aa-4250-983b-7bdf115bc459.png\" alt=\"immagine\" \/><\/p>\n<p>L'adozione di nuove funzionalit\u00e0 linguistiche \u00e8 ancora piuttosto bassa e <strong>PHP<\/strong> 5 oltre la quota di 24% mostra chiaramente che <strong><em>un quarto dei progetti PHP sta eseguendo versioni inferiori alla 7.x<\/em><\/strong>che terminer\u00e0 il suo supporto di sicurezza il 6 dicembre 2022. Ci\u00f2 significa che, al momento della stesura di questo post, oltre 25% di dispositivi basati su PHP <a href=\"https:\/\/thecodest.co\/it\/blog\/find-your-ideal-stack-for-web-development\/\">Web<\/a> I progetti saranno potenzialmente vulnerabili a tutte le nuove vulnerabilit\u00e0 di sicurezza entro la fine dell'anno. \"Se funziona perch\u00e9 dovremmo preoccuparci\"?<\/p>\n<h2>Conclusione<\/h2>\n<p>Dobbiamo adattarci ai cambiamenti linguistici il pi\u00f9 rapidamente possibile e utilizzare le soluzioni pi\u00f9 recenti il prima possibile. Durante un'eventuale migrazione di un progetto Legacy, vale la pena di includere <strong>Polifill di Symfony<\/strong> come aiuto e utilizzando tecniche come lo Strangler Pattern e la metodologia BDD, attualmente in voga, che \u00e8 favolosamente facile da applicare alla <strong>Quadro Symfony<\/strong>. Quindi siamo davvero costretti a usare <strong>Polifill di Symfony<\/strong>?<\/p>\n<p><a href=\"https:\/\/calendly.com\/the-codest-php\/thecodest-php-tech-consultation\"><img decoding=\"async\" src=\"\/app\/uploads\/2024\/05\/php_development.png\" alt=\"Sviluppo PHP consulenza gratuita\" \/><\/a><\/p>\n<p><strong>Per saperne di pi\u00f9:<\/strong><\/p>\n<p><a href=\"https:\/\/thecodest.co\/blog\/php-development-5-things-you-ought-to-know\">Sviluppo PHP: 5 cose da sapere<\/a><\/p>\n<p><a href=\"https:\/\/thecodest.co\/blog\/7-startups-that-will-shake-the-marketplace-scene-in-2022\/\">7 startup e scaleup che scuoteranno la scena del mercato nel 2022<\/a><\/p>\n<p><a href=\"https:\/\/thecodest.co\/blog\/php-development-symfony-console-component-tips-tricks\">Sviluppo PHP. Componente console di Symfony - Suggerimenti e trucchi<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Nel seguente articolo, spiegheremo come funziona Symfony Polyfill e come si relaziona con i progetti Symfony. Approfondiremo anche l'idea che questa libreria cerca di risolvere.<\/p>","protected":false},"author":2,"featured_media":3884,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-3883","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software-development"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why do we need Symfony Polyfill (... and why we shouldn&#039;t) - The Codest<\/title>\n<meta name=\"description\" content=\"In the following article, we explain how Symfony Polyfill works and how it relates to Symfony projects. 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