diff --git a/php/conversion timestamp secondes/convert.php b/php/conversion timestamp secondes/convert.php
new file mode 100644
index 00000000..de4c6f0a
--- /dev/null
+++ b/php/conversion timestamp secondes/convert.php	
@@ -0,0 +1,206 @@
+<?php
+// coller ici les données de timestamp pour les convertir
+$data = ["    00:10:47.000"
+    , "00:02:01.000"
+    , "00:01:47.000"
+    , "00:04:04.862"
+    , "00:12:28.000"
+    , "00:01:10.000"
+    , "00:02:54.000"
+    , "00:01:58.000"
+    , "00:01:54.000"
+    , "00:14:23.000"
+    , "00:01:33.000"
+    , "00:01:31.000"
+    , "00:04:22.000"
+    , "00:00:53.000"
+    , "00:06:37.000"
+    , "00:01:22.000"
+    , "00:12:11.000"
+    , "00:16:13.000"
+    , "00:00:56.000"
+];
+$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
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+99:99:99.000
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+00:02:24.000
+00:01:30.000
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+00:02:54.000
+00:01:58.000
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+00:01:31.000
+00:10:47.000
+00:12:11.000
+00:01:54.000
+00:01:22.000
+00:06:36.000
+00:12:28.000
+00:00:56.000
+00:16:13.000
+00:01:47.000
+99:99:99.000
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+99:99:99.000
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+00:03:05.000
+00:02:57.000
+00:07:23.000
+00:08:00.000
+00:02:38.000
+00:02:45.000
+00:28:39.000
+00:01:25.000
+00:07:16.000
+00:06:06.000
+00:02:11.000
+00:01:56.000
+00:02:56.000
+99:99:99.000
+99:99:99.000
+99:99:99.000
+00:03:03.000
+00:04:02.000
+00:05:03.000
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+00:03:33.000
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+00:01:52.000
+00:04:27.000
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+00:01:31.000
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+00:02:34.000
+00:07:40.000
+00:02:08.000
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+00:02:20.000
+00:04:01.000
+00:02:40.000
+00:08:40.000
+00:03:15.000
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+00:04:36.000
+00:01:16.000
+00:07:45.000
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+00:02:47.000
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+00:02:15.000
+00:02:07.000
+"
+];
+
+
+$data = explode("\n" , $data[0]);
+
+var_dump($data);
+
+
+$results = [];
+foreach ($data as $datum) {
+    if($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