Add implode_with_keys function

src/functions.php

@@ -328,4 +328,20 @@ function format_duration($value, $unit=null, $precision=null, $separator=null) {
   return implode(is_null($separator)?' ':strval($separator), $result);
 }
 
+/**
+ * Implode array's keys & values (ex: 'k1=v1, k2=v2, ...')
+ * @param array<string|int,mixed>  $values        Array to implode
+ * @param boolean $quoted        Set to false to disable values quotting (optional, default: true)
+ * @param string  $separator     Values separator (opional, default: ", ")
+ * @param string  $kv_separator  Key/value separator (optional, default: "=")
+ * @return string Imploded array string
+ */
+function implode_with_keys($values, $quoted=true, $separator=', ', $kv_separator='=') {
+  $result = [];
+  $quoted = $quoted?'"':'';
+  foreach ($values as $key => $value)
+    $result[] = "$key$kv_separator$quoted$value$quoted";
+  return implode($separator, $result);
+}
+
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