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diff --git a/ext/standard/tests/general_functions/usleep_error.phpt b/ext/standard/tests/general_functions/usleep_error.phpt
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+++ b/ext/standard/tests/general_functions/usleep_error.phpt
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+--TEST--
+Test usleep() function : error conditions
+--FILE--
+<?php
+/* Prototype : void usleep ( int $micro_seconds )
+ * Description: Delays program execution for the given number of micro seconds.
+ * Source code: ext/standard/basic_functions.c
+ */
+
+set_time_limit(20);
+
+echo "*** Testing usleep() : error conditions ***\n";
+
+echo "\n-- Testing usleep() function with zero arguments --\n";
+var_dump( usleep() );
+
+echo "\n-- Testing usleep() function with more than expected no. of arguments --\n";
+$seconds = 10;
+$extra_arg = 10;
+var_dump( usleep($seconds, $extra_arg) );
+
+echo "\n-- Testing usleep() function with negative interval --\n";
+$seconds = -10;
+var_dump( usleep($seconds) );
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing usleep() : error conditions ***
+
+-- Testing usleep() function with zero arguments --
+
+Warning: usleep() expects exactly 1 parameter, 0 given in %s on line %d
+NULL
+
+-- Testing usleep() function with more than expected no. of arguments --
+
+Warning: usleep() expects exactly 1 parameter, 2 given in %s on line %d
+NULL
+
+-- Testing usleep() function with negative interval --
+
+Warning: usleep(): Number of microseconds must be greater than or equal to 0 in %s on line %d
+bool(false)
+===DONE===