Promote warning to exception in file_get_contents() function

Author: kocsismate

ext/standard/file.c

@@ -543,8 +543,8 @@ PHP_FUNCTION(file_get_contents)
 	ZEND_PARSE_PARAMETERS_END();
 
 	if (ZEND_NUM_ARGS() == 5 && maxlen < 0) {
-		php_error_docref(NULL, E_WARNING, "length must be greater than or equal to zero");
-		RETURN_FALSE;
+		zend_value_error("Length must be greater than or equal to zero");
+		return;
 	}
 
 	context = php_stream_context_from_zval(zcontext, 0);

ext/standard/tests/file/file_get_contents_error.phpt

@@ -20,8 +20,12 @@ print( file_get_contents("/no/such/file/or/dir") );
 create_files($file_path, 1, "text", 0755, 100, "w", "file", 1, "byte");
 $file_handle = fopen($file_path."/file_put_contents_error.tmp", "w");
 
-echo "\n-- Testing for invalid negative maxlen values --";
-var_dump( file_get_contents($file_path."/file1.tmp", FALSE, $file_handle, 0, -5) );
+echo "\n-- Testing for invalid negative maxlen values --\n";
+try {
+    file_get_contents($file_path."/file1.tmp", FALSE, $file_handle, 0, -5);
+} catch (ValueError $exception) {
+    echo $exception->getMessage() . "\n";
+}
 
 delete_files($file_path, 1);
 fclose($file_handle);
@@ -47,7 +51,6 @@ if(file_exists($file_path."/file_put_contents1.tmp")) {
 Warning: file_get_contents(/no/such/file/or/dir): failed to open stream: No such file or directory in %s on line %d
 
 -- Testing for invalid negative maxlen values --
-Warning: file_get_contents(): length must be greater than or equal to zero in %s on line %d
-bool(false)
+Length must be greater than or equal to zero
 
 *** Done ***

ext/standard/tests/file/file_get_contents_error002.phpt

@@ -7,7 +7,11 @@ file_get_contents() test using negative parameter for length (last parameter)
 display_errors=false
 --FILE--
 <?php
-	var_dump(file_get_contents("http://checkip.dyndns.com",null,null,0,-1));
+try {
+    file_get_contents("http://checkip.dyndns.com",null,null,0,-1);
+} catch (ValueError $exception) {
+    echo $exception->getMessage() . "\n";
+}
 ?>
 --EXPECT--
-bool(false)
+Length must be greater than or equal to zero

ext/standard/tests/file/file_get_contents_file_put_contents_error.phpt

@@ -20,9 +20,13 @@ print( file_get_contents("/no/such/file/or/dir") );
 
 $file_handle = fopen($file_path."/file_put_contents.tmp", "w");
 
-echo "\n-- Testing for invalid negative maxlen values --";
+echo "\n-- Testing for invalid negative maxlen values --\n";
 file_put_contents($file_path."/file_put_contents1.tmp", "Garbage data in the file");
-var_dump( file_get_contents($file_path."/file_put_contents1.tmp", FALSE, NULL, 0, -5) );
+try {
+    file_get_contents($file_path."/file_put_contents1.tmp", FALSE, NULL, 0, -5);
+} catch (ValueError $exception) {
+    echo $exception->getMessage() . "\n";
+}
 
 fclose($file_handle);
 
@@ -43,7 +47,6 @@ unlink($file_path."/file_put_contents1.tmp");
 Warning: file_get_contents(/no/such/file/or/dir): failed to open stream: No such file or directory in %s on line %d
 
 -- Testing for invalid negative maxlen values --
-Warning: file_get_contents(): length must be greater than or equal to zero in %s on line %d
-bool(false)
+Length must be greater than or equal to zero
 
 *** Done ***