PHP Base64_decode 函数是PHP编程中用于解码Base64编码字符串的重要函数。通过Base64_decode函数,可以将经过Base64编码的字符串解码成原始的数据,方便在数据传输和存储过程中使用。本文将介绍Base64_decode函数的基本语法和用法,帮助读者更好地理解和运用该函数。如果您对PHP编程和数据处理感兴趣,那么不妨继续阅读,了解更多关于PHP Base64_decode函数的知识。
base64_decode()
是 php 的内置函数,最常用于网络上的邮件功能。
函数语法:
<code><code class="language-php hljs" data-lang="php"><span style="display:flex;"><span>string base64_decode( <span style="color:#19177c">$string</span>, <span style="color:#19177c">$strict</span>) </span></span></code></code>
它需要两个参数。
$string
- 用于存储编码数据,是必须的。$strict
- 虽然此参数不像前者那样是强制性的,但当它设置为 TRUE,
时,base64_decode 将返回 FALSE
,前提是它的输入包含函数字母表以外的数据。否则,无效数据将被自动丢弃。返回值:
base64 解码函数在失败
的情况下返回 FALSE
,并可能返回二进制值。失败
的情况下返回 FALSE
,并可能返回二进制值。
<code><code class="language-php hljs" data-lang="php"><span style="display:flex;"><span><span style="color:#666"><?</span>php </span></span><span style="display:flex;"><span><span style="color:#19177c">$string</span> <span style="color:#666">=</span> base64_encode (<span style="color:#ba2121">'Your string values are encoded'</span>); </span></span><span style="display:flex;"><span><span style="color:#008000;font-weight:bold">echo</span> <span style="color:#ba2121">"1.Here is the encoded funct<strong class="keylink">io</strong>n value in a <strong class="keylink">Mac</strong>hine readable f<strong class="keylink">ORM</strong>at = "</span><span style="color:#666">.</span><span style="color:#19177c">$string</span> <span style="color:#666">.</span><span style="color:#ba2121">"<br>"</span>; </span></span><span style="display:flex;"><span><span style="color:#008000;font-weight:bold">echo</span> <span style="color:#ba2121">"2.The function decodes the formerly encoded string value"</span> <span style="color:#666">.</span><span style="color:#ba2121">"<br>"</span> <span style="color:#666">.</span>base64_decode(<span style="color:#19177c">$string</span>); </span></span><span style="display:flex;"><span><span style="color:#bc7a00">?></span><span > </span></span></span></code></code>
输出:
<code><code class="language-text hljs" data-lang="text"><span style="display:flex;"><span>1.Here is the encoded function value in a machine readable </span></span><span style="display:flex;"><span>format = WW91ciBzdHJpbmcgdmFsdWVzIGFyZSBlbmNvZGVk </span></span><span style="display:flex;"><span>2. The function decodes the formerly encoded string value </span></span><span style="display:flex;"><span>Your string values are encoded. </span></span></code></code>
示例代码显示了 base64_decode()
函数如何在一个简单的场景中工作。
为了对编码数据进行解码,程序为变量赋值,然后与解码函数一起使用。
而输出表明 base64_decode()
<code><code class="language-php hljs" data-lang="php"><span style="display:flex;"><span><span style="color:#666"><?</span>php </span></span><span style="display:flex;"><span><span style="color:#408080;font-style:italic">//The following variable is assigned with a string set </span></span></span><span style="display:flex;"><span><span style="color:#408080;font-style:italic"></span><span style="color:#19177c">$string</span> <span style="color:#666">=</span> <span style="color:#ba2121">"HELLO--こんにちは--你好"</span>; </span></span><span style="display:flex;"><span><span style="color:#408080;font-style:italic">//string cont<strong class="keylink">ai</strong>ns bilingual text </span></span></span><span style="display:flex;"><span><span style="color:#408080;font-style:italic">//base64 is used to encode the data first into the $enco variable </span></span></span><span style="display:flex;"><span><span style="color:#408080;font-style:italic"></span><span style="color:#19177c">$enco</span> <span style="color:#666">=</span> base64_encode (<span style="color:#19177c">$string</span>); </span></span><span style="display:flex;"><span><span style="color:#408080;font-style:italic">//finally the base64_decode functionis used to decode the encoded value </span></span></span><span style="display:flex;"><span><span style="color:#408080;font-style:italic"></span><span style="color:#19177c">$deco</span> <span style="color:#666">=</span> base64_decode (<span style="color:#19177c">$enco</span>); </span></span><span style="display:flex;"><span><span style="color:#008000;font-weight:bold">echo</span> <span style="color:#19177c">$deco</span>; </span></span><span style="display:flex;"><span><span style="color:#bc7a00">?></span><span > </span></span></span></code></code>
<code><code class="language-text hljs" data-lang="text"><span style="display:flex;"><span>HELLO--こんにちは--你好 </span></span></code></code>
示例代码显示了
函数如何在一个简单的场景中工作。🎜🎜为了对编码数据进行解码,程序为变量赋值,然后与解码函数一起使用。🎜🎜而输出表明 🎜 如何将数据转换回用户可读格式。🎜🎜🎜PHP Base64_decode 函数示例代码 2🎜rrreee🎜输出:🎜rrreee以上是PHP Base64_decode 函数的详细内容。更多信息请关注PHP中文网其他相关文章!