Tag

PHP

14 posts tagged PHP.

  • Diagram: fgetcsv reading one row at a time, beside file() hitting the memory limit on the same file.

    09/02/2026

    Reading a huge CSV in PHP without exhausting memory

    file() and str_getcsv on a large export will hit the memory limit. Streaming it with fgetcsv uses a few kilobytes regardless of file size, and handles quoted newlines correctly.

  • Diagram: a crossed-out FOSUserBundle block opening into four replacement components -- Security, MakerBundle, ResetPasswordBundle and VerifyEmailBundle.

    09/02/2026

    Leaving FOSUserBundle: what replaces each piece

    The bundle is maintained only enough for existing projects to migrate off it. Every piece it provided now has a replacement in Symfony itself or in two small bundles - and the migration is mostly deletion.

  • Diagram: individually labeled form_row fields inside a form_start/form_end frame, with a form_rest chip carrying the CSRF token at the bottom.

    09/02/2026

    Rendering a Symfony form field by field in Twig

    One call renders the whole form and gives you no say in the markup. Splitting it up is four functions, and the one that matters most is form_rest - the safety net that stops a forgotten field from silently disappearing.

  • Converting PNG and JPG Images to WebP

    08/23/2025

    Convert PNG and JPEG to WebP with a PHP script

    A short GD script that converts a folder to WebP, preserves PNG transparency, and - the part usually missing - keeps the original whenever the WebP comes out larger, which happens more than you would think.

  • Rendering Twig from Symfony Repositories Without DI

    07/04/2019

    Rendering a Twig template outside a controller

    You do not need a controller to render Twig, and you should not pass the container around to get at it. Inject the Environment, and use createTemplate when the template itself comes from the database.

  • Diagram: addError() called from a controller landing on a specific field's inline error and on the form's own top-level error banner.

    06/11/2015

    Adding a form error from a controller in Symfony

    Some checks cannot live in a constraint because they need something the form does not know about. FormError attaches the message to a field, or to the form itself, so it renders where the user is looking.

  • Diagram: attribute(form, 'field_' ~ i) building a dynamic field name, resolving down to field_1 and field_2, guarded by an is defined check.

    04/14/2015

    Dynamic field names in Twig with attribute() and ~

    Dot notation cannot reach a property whose name you are building in the template. attribute() takes the name as a string, the tilde concatenates it, and `is defined` keeps the loop from throwing on a gap.

  • Diagram: a browser's cookie flowing into a Symfony Request object and out into a Twig template reading app.request.cookies.get('name').

    04/02/2015

    How to show or access cookie values in Symfony Twig views

    Strange how obscure it is to find a clear example of how to just access or show the value of a cookie in Twig, so here it is!

  • Diagram: the Request object at the center with arrows out to a Controller, a Service and a Twig template, and one arrow in from routing where the locale is set.

    01/01/2015

    Reading the current locale in Symfony

    The locale lives on the Request, not in a global. How to reach it from a controller, from a service that has no request, and from a template - and where it is set before any of that.

  • Diagram: setFirstResult and setMaxResults windowing a slice of a row stack, beside a fetch-joined collection case routed to Paginator instead.

    01/01/2015

    Limiting a Doctrine query with setMaxResults

    Here is an example of a simple DQL query in a custom repository method meant to return a single array result. The following will return the latest result in case there are multiple contact records that match the…

  • Diagram: MM and YYYY select fields feeding a DataTransformer that outputs a DateTime, beside a struck-through DateType with a hidden day control.

    11/19/2014

    A card expiry month/year field in Symfony

    The old answer was to render DateType's day dropdown and hide it with CSS. That works until somebody uses a screen reader. Two choice fields and a small transformer do the job honestly.

  • Diagram: a DataTransformer throwing an exception into a field that shows a generic message, beside an alternative field showing custom text built from the invalid value.

    08/20/2014

    invalid_message: what a failed transformer shows

    A transformer that cannot convert what was typed throws, and Symfony turns that into a message the user reads. Left alone it says nothing useful; invalid_message is where you replace it.

  • Insert PHP Code in WordPress via Shortcode

    02/26/2014

    Including a PHP file from a WordPress shortcode, safely

    The 2014 version of this shortcode takes a file path out of the post and includes it, which is a local file inclusion hole with extra steps. The fix is small: let the code decide which files are includable, not the person writing the post.

  • Diagram: Doctrine's flush() taking two paths, a silent commit or a thrown exception that has to be caught by type.

    11/19/2013

    Knowing whether a Doctrine insert or update worked

    Doctrine has no return value to check after flush() - it signals failure by throwing. Wrapping it is the right instinct, but the version of this snippet that has been circulating since 2013 catches nothing at all.

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