Allow usage of a since PHP version argument.

Most projects support PHP 5.4 at a minimum these days, therefore its almost useless to pollute the result set with extensions bundled since 5.2 etc. This additional flag `--since-version` llows you to pass a version string which will be compared using the `version_compare` function. If the extension php version is less it will be ommitted from the report.
wapmorgan · Feb 17, 2017 · c893113 · c893113
1 parent 8767879
commit c893113
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diff --git a/bin/phpca b/bin/phpca
@@ -39,6 +39,9 @@ if (isset($args['--extension']))
 else
     $analyzer->loadData();
 
+if (isset($args['--since-version']))
+    $analyzer->setSinceVersion($args['--since-version']);
+
 if (!empty($args['FILES'])) {
     foreach ($args['FILES'] as $file) {
         if (is_dir($file)) {

diff --git a/src/PhpCodeAnalyzer.php b/src/PhpCodeAnalyzer.php
@@ -48,6 +48,11 @@ class PhpCodeAnalyzer {
     private $constantsSet = array();
     private $extensions = array();
     private $usedExtensions = array();
+    private $sinceVersion = null;
+
+    public function setSinceVersion($version){
+        $this->sinceVersion = $version;
+    }
 
     public function loadData() {
         foreach (glob(dirname(dirname(__FILE__)).'/data/*.php') as $extension_file) {
@@ -266,6 +271,13 @@ public function printUsedExtensions() {
         arsort($this->usedExtensions);
         foreach ($this->usedExtensions as $extension => $uses_number) {
             $extension_data = $this->extensions[$extension];
+
+            if (!is_null($this->sinceVersion) && isset($extension_data['php_version'])) {
+                if(version_compare($extension_data['php_version'], $this->sinceVersion, '<=')){
+                    continue;
+                }
+            }
+
             if (isset($extension_data['description']))
                 echo '- ['.$extension.'] '.$extension_data['description'].'.';
             else