[英]change PHP's eregi to preg_match
我不知道如何解決這個錯誤
Warning: preg_match(): Unknown modifier '[' in
我的代碼是
while(list($k,$v)=each($con2)) {
$patt="($this->block_start_word|$this->block_end_word)[[:blank:]]*([0-9a-zA-Z\_]+)[[:blank:]]*$this->block_end_delim(.*)";
if (eregi($patt,$v,$res)) {
我想將eregi的php版本更新為preg_match,我對此進行了解釋
while(list($k,$v)=each($con2)) {
$patt="($this->block_start_word|$this->block_end_word)[[:blank:]]*([0-9a-zA-Z\_]+)[[:blank:]]*$this->block_end_delim(.*)";
if ( preg_match($patt,$v,$res)) {
如您在此答案中所見,preg_match將第一個字符視為定界符如何將PHP的eregi更改為preg_match
具體來說,您會收到錯誤消息,因為preg_match使用'('作為分隔符,因此在($ this-> block_start_word | $ this-> block_end_word)和'['
將模式更改為$ patt =“ /($ this-> block_start_word | $ this-> block_end_word)[[:blank:]] ([0-9a-zA-Z _] +)[[:blank:]] $ this - > block_end_delim(。*)/“;
它應該起作用,Goodluck!
好,讓我們來看一下這個正則表達式:
"($this->block_start_word|$this->block_end_word)[[:blank:]]*([0-9a-zA-Z\\_]+)[[:blank:]]*$this->block_end_delim(.*)"
我想你要:
$this->block_start_word
或$this->block_end_word
$this->block_end_delim
記住,怎么樣
<?php
$handle = fopen('php://stdin', "r");
while (($line = fgets($handle, 4096)) !== false) {
$exp = '/';
$exp .= '(';
$exp .= '\$this\-\>block_start_word';
$exp .= '|';
$exp .= '\$this\-\>block_end_word';
$exp .= ')';
$exp .= '\s*'; // Like [[:blank:]]*
$exp .= '([0-9a-zA-Z\_]+)';
$exp .= '\s*'; // Like [[:blank:]]*
$exp .= '\$this\-\>block_end_delim';
$exp .= '(.*)/';
if(preg_match($exp,$line)) {
print $line;
}
}
?>
如果$this->block_start_word
, $this->block_end_word
和$this->block_end_delim
在PHP腳本的其他位置設置:
<?php
$handle = fopen('php://stdin', "r");
while (($line = fgets($handle, 4096)) !== false) {
$exp = '/';
$exp .= '(';
$exp .= '$this->block_start_word;
$exp .= '|';
$exp .= '$this->block_end_word;
$exp .= ')';
$exp .= '\s*'; // Like [[:blank:]]*
$exp .= '([0-9a-zA-Z\_]+)';
$exp .= '\s*'; // Like [[:blank:]]*
$exp .= $this->block_end_delim;
$exp .= '(.*)/';
if(preg_match($exp,$line)) {
print $line;
}
}
?>
使用preg_match
您應該定義定界符,並且最好同時包含preg_quote
:
$patt="/(".preg_quote($this->block_start_word)."|".preg_quote($this->block_end_word."))[[:blank:]]*([0-9a-zA-Z\_]+)[[:blank:]]*".preg_quote($this->block_end_delim)."(.*)/";
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