Fatal error uncaught typeerror cannot access offset of type string on string in

* Moving the PDF version to a `const`

* Remove unused import

* Coding standards: Enable more PSR-2 rules

Enable rules which should be uncontroversial and easy to fix.

* Apply coding-standards changes to files

* Travis: Also check tests dir for coding standards

* Update IMagick version check logic

fixes dompdf#1296

* Fix scoping issue for IMagick version check

* fix Trying to access array offset on value of type null (dompdf#2227)

* fix Trying to access array offset on value of type null

* space

* fix css selector issue

* Fall back to decimals for roman numerals, if out of range

Consistent with how web browsers do it.

See https://en.wikipedia.org/wiki/Roman_numerals#Standard_form

* Stylesheet: Rename and document `_image` method for clarity

* Stylesheet: Make `resolve_url` public to reduce code duplication

* FontMetrics: Fix text-width calculations when using different backends

Fixes issue dompdf#2403.

* FontMetrics: Use direct access for protected properties

* Extend tests for resolving URLs in stylesheets

Without `$sheet->set_base_path(__DIR__)`, the stylesheet location would
be the location of phpunit.

* Fix instantiating CPDF Adapter without Dompdf

* Avoid offset error in CPDF line trasparency logic

related to dompdf#2227

* Use strict comparison in CPDF transparency logic

* Stylesheet: Improve return-value check

* Remove temporary file created when caching an image. (dompdf#2411)

* Remove temporary file created when caching an image.
dompdf#2377

* move unlink() to exception catch block

* Fix text-width calulation with letter spacing (dompdf#2414)

* Consistent doc for `get_text_width` arguments

To clear up the confusion about whether word and char spacing can be
float.

* CPDF: Fix text-width calulation with letter spacing

The letter spacing was counted twice for every space character.

* PDFLib: Fix text-width calculation with letter spacing

See discussion in dompdf#2414.

* Use OS-indepenent file path for unit test

* BlockFrameReflower: Always resolve `auto` widths

* Fix undefined variable (dompdf#2466)

* Bump version to 0.8.6

* Reset version string to commit hash

* Bump version to 1.0.1

* Reset version string to commit hash

* Bump version to 1.0.2

* Reset version string to commit hash

* Fix undefined variable

* Fix indentation

* Fix undefined variable

* Update src/FontMetrics.php

* Update src/FontMetrics.php

Co-authored-by: Brian Sweeney <brian@eclecticgeek.com>

* Add support for `page-break-before/-after` on table rows

pr dompdf#2512:

* Fix some typos

* Update documentation text for `_page_break_allowed`

Mainly to clear up a few unclear points that have changed. The comment
about table headers does not apply anymore.

* Add support for `page-break-before/-after` on table rows

Caveat: `page-break-after: always` does not work if the row is the last
of its table row group. I want to keep things simple now; this might be
better fixed in a proper rework of the page-break-properties handling,
e.g. by properly propagating the property values as per
https://www.w3.org/TR/css-break-3/#break-propagation.

Fixes dompdf#329

* BlockFrameReflower: Fixes to height calculations (dompdf#2511)

Brings the code closer to the spec:
* Always resolve `auto` heights
* Apply `min-/max-height` independently of the `overflow` property
value
* `min-height` overrules `max-height` (swapping removed)

* Prevent case exception in text renderer (dompdf#2423)

In case of " auto " width is throws an error as following and breaks the PDF render.
ErrorException: A non-numeric value encountered in /Path_To_Project/vendor/dompdf/dompdf/src/Renderer/Text.php:158

type casting the $width to float will prevent the ErrorException

* Resolve auto margins in more cases (dompdf#2531)

Fixes dompdf#1482

* Properly skip checking for page breaks on empty text nodes (dompdf#2506)

Before, page breaks before empty text nodes were not allowed, but they
were still checked; and as they report their line height as the space
needed, they could force a page break, which then would continue to
search backwards in the tree for an element that allowed a page break
(even though it would fit on the current page).

Based on work in dompdf#1356
Fixes dompdf#2468

* Fix table column widths after page break (dompdf#2502)

Node attributes are always string, so when a table was laid out, and
then a page break occurred before the table at a later point, `$colspan`
and `$rowspan` would always be string values and fail the checks below,
most notably the check where the minimum column width is set, so that
all columns received `0` minimum width.

Fixes dompdf#2395

* Add support for any inline-positioned frames in text alignment

This notably adds support for inline-block.

Fixes dompdf#1761

* Fix `justify` text alignment with letter spacing

The old logic seemed to correct for wrong text-width calculation
involving letter spacing when using the CPDF backend. With the fix in
dompdf#2414 this is no longer needed.

* Improve support for relative positioning

* Move handling of relative positioning to after the reflow process, so
that it does not affect layout.
* Handle `right` and `bottom` properties plus `auto` values (except for
RTL language support, which is an easy FIXME).
* As a side-effet, this adds support for relative positioning on inline
and inline-block elements.

Fixes dompdf#516

* Fix logic error in `add_frame_to_line` function

The block must check its own content-box width, not the content-box
width of its containing block when placing child frames.

Fixes dompdf#2476.

* Apply line shift to justified lines with break

* Tweak Style border/outline method color handling

fixes dompdf#2367

* BlockFrameReflower: Fix handling of `100%` width

The condition is wrong, as an `auto` width can resolve to more than
100% if the minimum width of the content is larger.

* BlockFrameReflower: Remove swapping of `min-/max-width`

Per spec, `min-width` overrules `max-width`.

https://www.w3.org/TR/CSS21/visudet.html#min-max-widths

* Remove erroneous ‘degenerate’ case handling in `get_min_max_width`

If the frame has no children, it might still have a fixed width set.

Fixes dompdf#2366

* Small code cleanups (dompdf#2547)

* Clean up `get_margin_height/width` functions

For simplicity, return a `float` value consistently.
The `get_break_margins` method was unused.

* TextReflower: Small cleanup for `get_min_max_width`

Also, add type declarations to `_collapse_white_space`.

* Clean up `split` method signatures

Consistent argument names and more type declarations.

Co-authored-by: Thomas Landauer <thomas@landauer.at>
Co-authored-by: Till Berger <till@mellthas.de>
Co-authored-by: Brian Sweeney <brian@eclecticgeek.com>
Co-authored-by: Edwin Manuel Cerrón Angeles <xerron.angels@gmail.com>
Co-authored-by: Ion Bazan <ion.bazan@gmail.com>
Co-authored-by: bradbulger <1234634+bradbulger@users.noreply.github.com>
Co-authored-by: Jáchym Toušek <enumag@gmail.com>
Co-authored-by: Madi <mudasser.ismail@gmail.com>