Remove --disable-all configuration option in PHP compile process (#…

…1132)

Based on #1127. This PR enables FileInfo and Posix extensions in PHP
previously disabled by `--disable-all`.

## What problem is it solving?

It allows the use of `new finfo()`. Previously, the following error
occurred :

```
node node_modules/.bin/cli test.php

> Fatal error: Uncaught Error: Class "finfo" not found in /mho22/works/php-wasm-issue/test.php:3
> Stack trace:
> #0 {main}
>   thrown in /mho22/works/php-wasm-issue/test.php on line 3
```

## Testing Instructions

1. `mkdir php-wasm-issue && cd php-wasm-issue` 

2. `npm install @php-wasm/cli`

3. `touch test.php` :

```php
<?php

$finfo = new finfo( FILEINFO_MIME );

echo json_encode( $finfo );
```

4. `node node_modules/.bin/cli test.php`

packages/php-wasm/compile/build.js

@@ -118,6 +118,7 @@ const platformDefaults = {
 	},
 	['web-light']: {},
 	['web-kitchen-sink']: {
+		WITH_FILEINFO: 'yes',
 		WITH_ICONV: 'yes',
 		WITH_LIBXML: 'yes',
 		WITH_LIBPNG: 'yes',
@@ -126,10 +127,10 @@ const platformDefaults = {
 		WITH_OPENSSL: 'yes',
 	},
 	node: {
+		WITH_FILEINFO: 'yes',
 		WITH_ICONV: 'yes',
 		WITH_LIBXML: 'yes',
 		WITH_LIBPNG: 'yes',
-		WITH_ICONV: 'yes',
 		WITH_MBSTRING: 'yes',
 		WITH_MBREGEX: 'yes',
 		WITH_CLI_SAPI: 'yes',

packages/php-wasm/compile/php/Dockerfile

@@ -141,7 +141,7 @@ RUN if [ "$WITH_LIBXML" = "yes" ]; \
 			/root/replace.sh 's/xmlHashScan\(ht, itemHashScanner, iter\);/xmlHashScan(ht, (xmlHashScanner)itemHashScanner, iter);/g' /root/php-src/ext/dom/dom_iterators.c; \
 		fi; \
 	else \
-		echo -n ' --disable-libxml --without-libxml --disable-dom --disable-xml --disable-simplexml --disable-xmlwriter' >> /root/.php-configure-flags; \
+		echo -n ' --disable-libxml --without-libxml --disable-dom --disable-xml --disable-simplexml --disable-xmlreader --disable-xmlwriter' >> /root/.php-configure-flags; \
 	fi
 
 # Add sqlite3 if needed
@@ -168,11 +168,22 @@ RUN if [ "$WITH_OPENSSL" = "yes" ]; \
 		echo -n ' -lssl -lcrypto ' >> /root/.emcc-php-wasm-flags; \
 	fi;
 
+# Remove fileinfo if needed
+RUN if [ ! "$WITH_FILEINFO" = "yes" ]; \
+    then \
+        # light bundle should compile without fileinfo and libmagic
+        echo -n ' --disable-fileinfo' >> /root/.php-configure-flags; \
+    fi;
+
 # Add iconv if needed
 RUN if [ "$WITH_ICONV" = "yes" ]; \
 	then \
 		echo -n ' --with-iconv=/root/lib ' >> /root/.php-configure-flags; \
 		echo -n ' /root/lib/lib/libiconv.a' >> /root/.emcc-php-wasm-sources; \
+		# PHP >= 8.0 posix is no longer supported.
+		# PHP ≤= 7.4 posix is supported.
+	else \
+		echo -n ' --without-iconv ' >> /root/.php-configure-flags; \
 	fi;
 
 # Add mbstring if needed
@@ -240,7 +251,8 @@ RUN source /root/emsdk/emsdk_env.sh && \
 	--enable-embed=static \
 	--with-layout=GNU  \
 	--disable-cgi      \
-	--disable-all      \
+	--disable-opcache  \
+	--disable-posix    \
 	--enable-hash      \
 	--enable-static=yes \
 	--enable-shared=no \