Solved ProjectEuler/010: php, ruby, c

ProjectEuler/010/solve.php

@@ -0,0 +1,18 @@
+<?php
+
+function is_prime($prime) {    
+    $sqrt = sqrt($prime);
+    for ($i = 3; $i <= $sqrt; $i+=2){
+        if ($prime%$i == 0) return false; 
+    } 
+    return true; 
+} 
+ 
+$sum = 2+3;
+for($number = 5; $number < 2000000; $number+=2) {
+	if (is_prime($number))
+	{
+		$sum += $number;
+	}
+}
+echo $sum;