diff --git a/php/conversion timestamp secondes/convert.php b/php/conversion timestamp secondes/convert.php
new file mode 100644
index 00000000..1d01275c
--- /dev/null
+++ b/php/conversion timestamp secondes/convert.php	
@@ -0,0 +1,42 @@
+<?php
+// coller ici les données de timestamp pour les convertir
+$data = ["    00:10:47.000"
+    , "00:02:01.000"
+    , "00:01:47.000"
+    , "00:04:04.862"
+    , "00:12:28.000"
+    , "00:01:10.000"
+    , "00:02:54.000"
+    , "00:01:58.000"
+    , "00:01:54.000"
+    , "00:14:23.000"
+    , "00:01:33.000"
+    , "00:01:31.000"
+    , "00:04:22.000"
+    , "00:00:53.000"
+    , "00:06:37.000"
+    , "00:01:22.000"
+    , "00:12:11.000"
+    , "00:16:13.000"
+    , "00:00:56.000"
+];
+
+$results = [];
+foreach ($data as $datum) {
+    $results[] = convertTimeStampToSeconds($datum);
+
+}
+
+function convertTimeStampToSeconds($timestamp)
+{
+    $converted = '';
+    $boom = explode(':', $timestamp);
+    $seconds = explode('.', $boom[2]);
+    $converted = $boom[0] * 120 + $boom[1] * 60 + $boom[2] * 1;
+    return $converted;
+}
+
+
+foreach ($results as $result) {
+    echo "\n" . $result . ' ';
+}
\ No newline at end of file