From: Andrey Hristov <andrey@php.net>
Date: Mon, 2 May 2005 12:32:21 +0000 (+0000)
Subject: fixed div by zero
X-Git-Tag: php-5.0.1b1~349
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7a0b3edbe026c0c918272e3c0e31ed6adc01a0ad;p=php

fixed div by zero
#div by zero is bad...div by zero is bad...bad
---

diff --git a/ext/standard/math.c b/ext/standard/math.c
index 3aa845fd67..9e2fd1273b 100644
--- a/ext/standard/math.c
+++ b/ext/standard/math.c
@@ -1228,6 +1228,10 @@ PHP_FUNCTION(math_variance)
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "The array has zero elements");
 		RETURN_FALSE;
 	}
+	if (sample && zend_hash_num_elements(Z_ARRVAL_P(arr)) == 1) {
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "The array has only 1 element");
+		RETURN_FALSE;
+	}
 	RETURN_DOUBLE(php_population_variance(arr, sample));
 }
 /* }}} */
@@ -1247,6 +1251,10 @@ PHP_FUNCTION(math_std_dev)
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "The array has zero elements");
 		RETURN_FALSE;
 	}
+	if (sample && zend_hash_num_elements(Z_ARRVAL_P(arr)) == 1) {
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "The array has only 1 element");
+		RETURN_FALSE;
+	}
 	RETURN_DOUBLE(sqrt(php_population_variance(arr, sample)));
 }
 /* }}} */