代码如下:
<span 1</span> <?<span php </span><span 2</span> <span /*</span><span * </span><span 3</span> <span * </span><span 4</span> <span * 我的日历 </span><span 5</span> <span * date_default_timezone_set date mktime </span><span 6</span> <span * @param int $year </span><span 7</span> <span * @param int $month </span><span 8</span> <span * @param string $timezone </span><span 9</span> <span * @author fc_lamp </span><span 10</span> <span * @blog: http://www.cnblogs.com/roucheng/ </span><span 11</span> <span */</span> <span 12</span> <span function</span> myCalender(<span $year</span> = '', <span $month</span> = '', <span $timezone</span> = 'Asia/Shanghai'<span ) </span><span 13</span> <span { </span><span 14</span> <span 15</span> date_default_timezone_set ( <span $timezone</span><span ); </span><span 16</span> <span $year</span> = <span abs</span> ( <span intval</span> ( <span $year</span><span ) ); </span><span 17</span> <span $month</span> = <span abs</span> ( <span intval</span> ( <span $month</span><span ) ); </span><span 18</span> <span 19</span> <span //</span><span 是否是32位机</span> <span 20</span> <span if</span><span (is32()) </span><span 21</span> <span { </span><span 22</span> <span if</span> (<span $year</span> < 1970 or <span $year</span> >= 2038<span ) </span><span 23</span> <span { </span><span 24</span> <span $year</span> = <span date</span> ( 'Y'<span ); </span><span 25</span> <span } </span><span 26</span> } <span else</span> <span 27</span> <span { </span><span 28</span> <span if</span> (<span $year</span> <= 0<span ) </span><span 29</span> <span { </span><span 30</span> <span $year</span> = <span date</span> ( 'Y'<span ); </span><span 31</span> <span } </span><span 32</span> <span 33</span> <span } </span><span 34</span> <span 35</span> <span if</span> (<span $month</span> <= 0 or <span $month</span> > 12<span ) </span><span 36</span> <span { </span><span 37</span> <span $month</span> = <span date</span> ( 'm'<span ); </span><span 38</span> <span } </span><span 39</span> <span 40</span> <span //</span><span 上一年</span> <span 41</span> <span $pretYear</span> = <span $year</span> - 1<span ; </span><span 42</span> <span //</span><span 上一月</span> <span 43</span> <span $mpYear</span> = <span $year</span><span ; </span><span 44</span> <span $preMonth</span> = <span $month</span> - 1<span ; </span><span 45</span> <span if</span> (<span $preMonth</span> <= 0<span ) </span><span 46</span> <span { </span><span 47</span> <span $preMonth</span> = 1<span ; </span><span 48</span> <span $mpYear</span> = <span $pretYear</span><span ; </span><span 49</span> <span } </span><span 50</span> <span 51</span> <span //</span><span 下一年</span> <span 52</span> <span $nextYear</span> = <span $year</span> + 1<span ; </span><span 53</span> <span //</span><span 下一月</span> <span 54</span> <span $mnYear</span> = <span $year</span><span ; </span><span 55</span> <span $nextMonth</span> = <span $month</span> + 1<span ; </span><span 56</span> <span if</span> (<span $nextMonth</span> > 12<span ) </span><span 57</span> <span { </span><span 58</span> <span $nextMonth</span> = 1<span ; </span><span 59</span> <span $mnYear</span> = <span $nextYear</span><span ; </span><span 60</span> <span } </span><span 61</span> <span 62</span> <span //</span><span 日历头</span> <span 63</span> <span $html</span> = <<<<span HTML </span><span 64</span> <table width="500" border="1"> <span 65</span> <tr align="center"> <span 66</span> <td><a href="?y=<span $pretYear</span>">上一年</a></td> <span 67</span> <td><a href="?y=<span $mpYear</span>&m=<span $preMonth</span>">上一月</a></td> <span 68</span> <td><a href="?">回到今天</a></td> <span 69</span> <td><a href="?y=<span $mnYear</span>&m=<span $nextMonth</span>">下一月</a></td> <span 70</span> <td><a href="?y=<span $nextYear</span>">下一年</a></td> <span 71</span> </tr> <span 72</span> <tr align="center"> <span 73</span> <td colspan="5">{<span $year</span>}年{<span $month</span>}月</td> <span 74</span> </tr> <span 75</span> <tr> <span 76</span> <td colspan="5"> <span 77</span> <table width="100%" border="1"> <span 78</span> <tr align="center"> <span 79</span> <td 80</span> <td 81</span> <td 82</span> <td 83</span> <td 84</span> <td 85</span> <td 86</span> </tr> <span 87</span> <span HTML; </span><span 88</span> <span 89</span> <span $currentDay</span> = <span date</span> ( 'Y-m-j'<span ); </span><span 90</span> <span 91</span> <span //</span><span 当月最后一天</span> <span 92</span> <span $lastday</span> = <span date</span> ( 'j', <span mktime</span> ( 0, 0, 0, <span $nextMonth</span>, 0, <span $year</span><span ) ); </span><span 93</span> <span 94</span> <span //</span><span 循环输出天数</span> <span 95</span> <span $day</span> = 1<span ; </span><span 96</span> <span $line</span> = ''<span ; </span><span 97</span> <span while</span> ( <span $day</span> <= <span $lastday</span><span ) </span><span 98</span> <span { </span><span 99</span> <span $cday</span> = <span $year</span> . '-' . <span $month</span> . '-' . <span $day</span><span ; </span><span 100</span> <span 101</span> <span //</span><span 当前星期几</span> <span 102</span> <span $nowWeek</span> = <span date</span> ( 'N', <span mktime</span> ( 0, 0, 0, <span $month</span>, <span $day</span>, <span $year</span><span ) ); </span><span 103</span> <span 104</span> <span if</span> (<span $day</span> == 1<span ) </span><span 105</span> <span { </span><span 106</span> <span $line</span> = '<tr align="center">'<span ; </span><span 107</span> <span $line</span> .= <span str_repeat</span> ( '<td> </td>', <span $nowWeek</span> - 1<span ); </span><span 108</span> <span } </span><span 109</span> <span 110</span> <span if</span> (<span $cday</span> == <span $currentDay</span><span ) </span><span 111</span> <span { </span><span 112</span> <span $style</span> = '; </span><span 113</span> } <span else</span> <span 114</span> <span { </span><span 115</span> <span $style</span> = ''<span ; </span><span 116</span> <span } </span><span 117</span> <span 118</span> <span $line</span> .= "<td <span $style</span>><span $day</span></td>"<span ; </span><span 119</span> <span 120</span> <span //</span><span 一周结束</span> <span 121</span> <span if</span> (<span $nowWeek</span> == 7<span ) </span><span 122</span> <span { </span><span 123</span> <span $line</span> .= '</tr>'<span ; </span><span 124</span> <span $html</span> .= <span $line</span><span ; </span><span 125</span> <span $line</span> = '<tr align="center">'<span ; </span><span 126</span> <span } </span><span 127</span> <span 128</span> <span //</span><span 全月结束</span> <span 129</span> <span if</span> (<span $day</span> == <span $lastday</span><span ) </span><span 130</span> <span { </span><span 131</span> <span if</span> (<span $nowWeek</span> != 7<span ) </span><span 132</span> <span { </span><span 133</span> <span $line</span> .= <span str_repeat</span> ( '<td> </td>', 7 - <span $nowWeek</span><span ); </span><span 134</span> <span } </span><span 135</span> <span $line</span> .= '</tr>'<span ; </span><span 136</span> <span $html</span> .= <span $line</span><span ; </span><span 137</span> <span 138</span> <span break</span><span ; </span><span 139</span> <span } </span><span 140</span> <span 141</span> <span $day</span> ++<span ; </span><span 142</span> <span } </span><span 143</span> <span 144</span> <span $html</span> .= <<<<span HTML </span><span 145</span> </table> <span 146</span> </td> <span 147</span> </tr> <span 148</span> </table> <span 149</span> <span HTML; </span><span 150</span> <span return</span> <span $html</span><span ; </span><span 151</span> <span } </span><span 152</span> <span 153</span> <span /*</span><span * </span><span 154</span> <span * </span><span 155</span> <span * 检测是否是32位机 </span><span 156</span> <span * @author fc_lamp </span><span 157</span> <span * @blog: fc-lamp.blog.163.com </span><span 158</span> <span */</span> <span 159</span> <span function</span><span is32() </span><span 160</span> <span { </span><span 161</span> <span $is32</span> = <span False</span><span ; </span><span 162</span> <span if</span> (<span strtotime</span> ( '2039-10-10' ) === <span False</span><span ) </span><span 163</span> <span { </span><span 164</span> <span $is32</span> = <span True</span><span ; </span><span 165</span> <span } </span><span 166</span> <span return</span> <span $is32</span><span ; </span><span 167</span> }

PHP类型提示提升代码质量和可读性。1)标量类型提示:自PHP7.0起,允许在函数参数中指定基本数据类型,如int、float等。2)返回类型提示:确保函数返回值类型的一致性。3)联合类型提示:自PHP8.0起,允许在函数参数或返回值中指定多个类型。4)可空类型提示:允许包含null值,处理可能返回空值的函数。

PHP中使用clone关键字创建对象副本,并通过\_\_clone魔法方法定制克隆行为。1.使用clone关键字进行浅拷贝,克隆对象的属性但不克隆对象属性内的对象。2.通过\_\_clone方法可以深拷贝嵌套对象,避免浅拷贝问题。3.注意避免克隆中的循环引用和性能问题,优化克隆操作以提高效率。

PHP适用于Web开发和内容管理系统,Python适合数据科学、机器学习和自动化脚本。1.PHP在构建快速、可扩展的网站和应用程序方面表现出色,常用于WordPress等CMS。2.Python在数据科学和机器学习领域表现卓越,拥有丰富的库如NumPy和TensorFlow。

HTTP缓存头的关键玩家包括Cache-Control、ETag和Last-Modified。1.Cache-Control用于控制缓存策略,示例:Cache-Control:max-age=3600,public。2.ETag通过唯一标识符验证资源变化,示例:ETag:"686897696a7c876b7e"。3.Last-Modified指示资源最后修改时间,示例:Last-Modified:Wed,21Oct201507:28:00GMT。

在PHP中,应使用password_hash和password_verify函数实现安全的密码哈希处理,不应使用MD5或SHA1。1)password_hash生成包含盐值的哈希,增强安全性。2)password_verify验证密码,通过比较哈希值确保安全。3)MD5和SHA1易受攻击且缺乏盐值,不适合现代密码安全。

PHP是一种服务器端脚本语言,用于动态网页开发和服务器端应用程序。1.PHP是一种解释型语言,无需编译,适合快速开发。2.PHP代码嵌入HTML中,易于网页开发。3.PHP处理服务器端逻辑,生成HTML输出,支持用户交互和数据处理。4.PHP可与数据库交互,处理表单提交,执行服务器端任务。

PHP在过去几十年中塑造了网络,并将继续在Web开发中扮演重要角色。1)PHP起源于1994年,因其易用性和与MySQL的无缝集成成为开发者首选。2)其核心功能包括生成动态内容和与数据库的集成,使得网站能够实时更新和个性化展示。3)PHP的广泛应用和生态系统推动了其长期影响,但也面临版本更新和安全性挑战。4)近年来的性能改进,如PHP7的发布,使其能与现代语言竞争。5)未来,PHP需应对容器化、微服务等新挑战,但其灵活性和活跃社区使其具备适应能力。

PHP的核心优势包括易于学习、强大的web开发支持、丰富的库和框架、高性能和可扩展性、跨平台兼容性以及成本效益高。1)易于学习和使用,适合初学者;2)与web服务器集成好,支持多种数据库;3)拥有如Laravel等强大框架;4)通过优化可实现高性能;5)支持多种操作系统;6)开源,降低开发成本。


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