PHP内置了一个php_strip_whitespace方法用于读取php文件并去除代码中的空白和注释,但不支持直接读取内容去除空白和注释,下面的方法则可以支持读取字符串内容,并且ThinkPHP框架内置了该方法。
/**<br>
* 去除代码中的空白和注释<br>
* @param string $content 代码内容<br>
* @return string<br>
*/<br>
function strip_whitespace($content) {<br>
$stripStr = '';<br>
//分析php源码<br>
$tokens = token_get_all($content);<br>
$last_space = false;<br>
for ($i = 0, $j = count($tokens); $i
if (is_string($tokens[$i])) {<br>
$last_space = false;<br>
$stripStr .= $tokens[$i];<br>
} else {<br>
switch ($tokens[$i][0]) {<br>
//过滤各种PHP注释<br>
case T_COMMENT:<br>
case T_DOC_COMMENT:<br>
break;<br>
//过滤空格<br>
case T_WHITESPACE:<br>
if (!$last_space) {<br>
$stripStr .= ' ';<br>
$last_space = true;<br>
}<br>
break;<br>
case T_START_HEREDOC:<br>
$stripStr .= "
break;<br>
case T_END_HEREDOC:<br>
$stripStr .= "THINK;\n";<br>
for($k = $i+1; $k
if(is_string($tokens[$k]) && $tokens[$k] == ';') {<br>
$i = $k;<br>
break;<br>
} else if($tokens[$k][0] == T_CLOSE_TAG) {<br>
break;<br>
}<br>
}<br>
break;<br>
default:<br>
$last_space = false;<br>
$stripStr .= $tokens[$i][1];<br>
}<br>
}<br>
}<br>
return $stripStr;<br>
}
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