Add 'source' checkbox, and add direct link to source tarballs

downloads-get-instructions.php

@@ -37,6 +37,14 @@ if (array_key_exists('multiversion', $options)) {
 	$multiversion = $options['multiversion'] === 'Y';
 }
 
+$source = false;
+
+if (array_key_exists('source', $options)) {
+	if ($options['source'] === 'Y') {
+		$source = $options['source'] === 'Y';
+	}
+}
+
 switch ($options['os']) {
 	case 'linux':
 		$defaultOrCommunity = ($options['version'] !== 'default' || $multiversion) ? 'community' : 'default';
@@ -51,16 +59,23 @@ switch ($options['os']) {
 		break;
 }
 
+if ($source) {
+    $file = "{$options['os']}-source";
+}
+
 $version = $options['version'];
 $versionNoDot = str_replace('.', '', $version);
 
 if (file_exists(__DIR__ . "/include/download-instructions/{$file}.php")) {
 	include __DIR__ . "/include/download-instructions/{$file}.php";
+	if ($source) {
+		return false;
+	}
 	return true;
 } else {
 ?>
 <p>
-There are no instructions yet. Try using the generic installation from source.
+    There are no instructions yet. Try using the <a href="https://www.php.net/manual/en/install.php">generic installation from source</a>.
 </p>
 <?php
 	return false;

downloads.php

@@ -16,6 +16,7 @@ $SIDEBAR_DATA = '
   </div>
 </div>
 
+<p class="panel"><a href="downloads.php?source=Y">Source Tarballs</a></p>
 <p class="panel"><a href="download-docs.php">Documentation Download</a></p>
 <p class="panel"><a href="download-logos.php">PHP Logos</a></p>
 
@@ -156,13 +157,13 @@ if (!array_key_exists('osvariant', $options) || !array_key_exists($options['osva
         <input type="checkbox" id="multiversion" name="multiversion" value="Y"
             <?= array_key_exists('multiversion', $options) && $options['multiversion'] === 'Y' ? 'checked' : '' ?>/>
     </label>
-<!--
+
     <label for="source" class="instructions-label">
         I want to compile everything from source:
         <input type="checkbox" id="source" name="source" value="Y"
             <?= array_key_exists('source', $options) && $options['source'] === 'Y' ? 'checked' : '' ?>/>
     </label>
--->
+
     <noscript>
         <button type="submit" class="button">Update Instructions</button>
     </noscript>

include/download-instructions/linux-source.php

@@ -0,0 +1,4 @@
+<p>
+	The <a href="https://www.php.net/manual/en/install.unix.source.php">instructions for compiling from source
+	on Linux</a> are described in the PHP manual.
+</p>

include/download-instructions/osx-source.php

@@ -0,0 +1,4 @@
+<p>
+	The <a href="https://www.php.net/manual/en/install.unix.source.php">instructions for compiling from source
+	on macOS</a> are described in the PHP manual.
+</p>

include/download-instructions/windows-source.php

@@ -0,0 +1,4 @@
+<p>
+	The <a href="https://www.php.net/manual/en/install.windows.building.php">instructions for compiling from source
+	on Windows</a> are described in the PHP manual.
+</p>