php获取cpu与内存使用情况的代码一例

3. /*

4. @系统参数探测 LINUX
5. @Edit bbs.it-home.org
6. @date 2013/5/8
7. */
8. function sys_linux()
9. {
10. // CPU
11. if (false === ($str = @file(“/proc/cpuinfo”))) return false;
12. $str = implode(“”, $str);
13. @preg_match_all(“/model\s+name\s{0,}\:+\s{0,}([\w\s\)\(.]+)[\r\n]+/”, $str, $model);
14. //@preg_match_all(“/cpu\s+MHz\s{0,}\:+\s{0,}([\d\.]+)[\r\n]+/”, $str, $mhz);
15. @preg_match_all(“/cache\s+size\s{0,}\:+\s{0,}([\d\.]+\s{0,}[A-Z]+[\r\n]+)/”, $str, $cache);
16. if (false !== is_array($model[1]))
17. {
18. $res['cpu']['num'] = sizeof($model[1]);
19. for($i = 0; $i {
20. $res['cpu']['detail'][] = “类型：”.$model[1][$i].” 缓存：”.$cache[1][$i];
21. }
22. if (false !== is_array($res['cpu']['detail'])) $res['cpu']['detail'] = implode(”
23. “, $res['cpu']['detail']);
24. }

25. // UPTIME

26. if (false === ($str = @file(“/proc/uptime”))) return false;
27. $str = explode(” “, implode(“”, $str));
28. $str = trim($str[0]);
29. $min = $str / 60;
30. $hours = $min / 60;
31. $days = floor($hours / 24);
32. $hours = floor($hours – ($days * 24));
33. $min = floor($min – ($days * 60 * 24) – ($hours * 60));
34. if ($days !== 0) $res['uptime'] = $days.”天”;
35. if ($hours !== 0) $res['uptime'] .= $hours.”小时”;
36. $res['uptime'] .= $min.”分钟”;

37. // MEMORY

38. if (false === ($str = @file(“/proc/meminfo”))) return false;
39. $str = implode(“”, $str);
40. preg_match_all(“/MemTotal\s{0,}\:+\s{0,}([\d\.]+).+?MemFree\s{0,}\:+\s{0,}([\d\.]+).+?SwapTotal\s{0,}\:+\s{0,}([\d\.]+).+?SwapFree\s{0,}\:+\s{0,}([\d\.]+)/s”, $str, $buf);

41. $res['memTotal'] = round($buf[1][0]/1024, 2);

42. $res['memFree'] = round($buf[2][0]/1024, 2);
43. $res['memUsed'] = ($res['memTotal']-$res['memFree']);
44. $res['memPercent'] = (floatval($res['memTotal'])!=0)?round(($res['memUsed']/$res['memTotal'])*90,2):0;

45. $res['swapTotal'] = round($buf[3][0]/1024, 2);

46. $res['swapFree'] = round($buf[4][0]/1024, 2);
47. $res['swapUsed'] = ($res['swapTotal']-$res['swapFree']);
48. $res['swapPercent'] = (floatval($res['swapTotal'])!=0)?round(($res['swapUsed']/$res['swapTotal'])*90,2):0;

49. // LOAD AVG

50. if (false === ($str = @file(“/proc/loadavg”))) return false;
51. $str = explode(” “, implode(“”, $str));
52. $str = array_chunk($str, 3);
53. $res['loadAvg'] = implode(” “, $str[0]);

54. return $res;

55. }
56. /*
57. 系统参数探测 FreeBSD
58. */
59. function sys_freebsd()
60. {
61. //CPU
62. if (false === ($res['cpu']['num'] = get_key(“hw.ncpu”))) return false;
63. $res['cpu']['detail'] = get_key(“hw.model”);

64. //LOAD AVG

65. if (false === ($res['loadAvg'] = get_key(“vm.loadavg”))) return false;
66. $res['loadAvg'] = str_replace(“{“, “”, $res['loadAvg']);
67. $res['loadAvg'] = str_replace(“}”, “”, $res['loadAvg']);

68. //UPTIME

69. if (false === ($buf = get_key(“kern.boottime”))) return false;
70. $buf = explode(‘ ‘, $buf);
71. $sys_ticks = time() – intval($buf[3]);
72. $min = $sys_ticks / 60;
73. $hours = $min / 60;
74. $days = floor($hours / 24);
75. $hours = floor($hours – ($days * 24));
76. $min = floor($min – ($days * 60 * 24) – ($hours * 60));
77. if ($days !== 0) $res['uptime'] = $days.”天”;
78. if ($hours !== 0) $res['uptime'] .= $hours.”小时”;
79. $res['uptime'] .= $min.”分钟”;

80. //MEMORY

81. if (false === ($buf = get_key(“hw.physmem”))) return false;
82. $res['memTotal'] = round($buf/1024/1024, 2);
83. $buf = explode(“\n”, do_command(“vmstat”, “”));
84. $buf = explode(” “, trim($buf[2]));

85. $res['memFree'] = round($buf[5]/1024, 2);

86. $res['memUsed'] = ($res['memTotal']-$res['memFree']);
87. $res['memPercent'] = (floatval($res['memTotal'])!=0)?round(($res['memUsed']/$res['memTotal'])*90,2):0;

88. $buf = explode(“\n”, do_command(“swapinfo”, “-k”));

89. $buf = $buf[1];
90. preg_match_all(“/([0-9]+)\s+([0-9]+)\s+([0-9]+)/”, $buf, $bufArr);
91. $res['swapTotal'] = round($bufArr[1][0]/1024, 2);
92. $res['swapUsed'] = round($bufArr[2][0]/1024, 2);
93. $res['swapFree'] = round($bufArr[3][0]/1024, 2);
94. $res['swapPercent'] = (floatval($res['swapTotal'])!=0)?round(($res['swapUsed']/$res['swapTotal'])*90,2):0;

95. return $res;

96. }

97. /*

98. 取得参数值 FreeBSD
99. */
100. function get_key($keyName)
101. {
102. return do_command(‘sysctl’, “-n $keyName”);
103. }

104. /*

105. 确定执行文件位置 FreeBSD
106. */
107. function find_command($commandName)
108. {
109. $path = array(‘/bin’, ‘/sbin’, ‘/usr/bin’, ‘/usr/sbin’, ‘/usr/local/bin’, ‘/usr/local/sbin’);
110. foreach($path as $p)
111. {
112. if (@is_executable(“$p/$commandName”)) return “$p/$commandName”;
113. }
114. return false;
115. }

116. /*

117. 执行系统命令 FreeBSD
118. */
119. function do_command($commandName, $args)
120. {
121. $buffer = “”;
122. if (false === ($command = find_command($commandName))) return false;
123. if ($fp = @popen(“$command $args”, ‘r’))
124. {
125. while (!@feof($fp))
126. {
127. $buffer .= @fgets($fp, 4096);
128. }
129. return trim($buffer);
130. }
131. return false;
132. }
133. ?>

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说明： memory用此函数可搞定: memory_get_usage() 在Windows下面只能读取cmd命令运行的结果。 例如：

2. $a = system(‘mem’);
3. echo $a.”
4. “;
5. //或者
6. $a = system(‘mem’);
7. echo $a.”
8. “;
9. ?>

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