Comparison of commonly used string regular replacement and split functions in PHP_PHP Tutorial

This article will introduce to you the comparison of commonly used string regular replacement and splitting functions in PHP. In PHP, string regular replacements include: str_replace, str_ireplace, substr_replace, preg_replace, preg_match, preg_match_all, preg_quote, preg_split, ereg_replace, eregi_replace, preg_replace, str_split Function, let me introduce it to you below. ​

The relationship between regular functions is ambiguous, so we put them together for comparison for easy reference.

名称	支持正则	特点	备注
str_replace	X	字符串替换函数，大小写敏感
str_ireplace	X	字符串替换函数，大小写不敏感，支持数组式批量替换	感谢网友franci，提醒添加
substr_replace	X	部分替换字符串函数，可以指定位置index
preg_replace	Y	指定匹配模式进行替换，支持子串引用	优先使用
ereg_replace	Y	指定匹配模式进行替换，大小写敏感，支持子串引用
eregi_replace	Y	指定匹配模式进行替换，大小写不敏感，支持子串引用
ereg	Y	指定模式全文匹配，可以用来匹配判断，或返回匹配数组
preg_match	Y	指定模式匹配一次退出，可以用来是否匹配判断，或使用返回的匹配数组	优先使用
preg_match_all	Y	指定模式全文匹配，一般用来使用返回的匹配数组	优先使用
preg_split	Y	指定匹配模式下正则剖分，如果能用最好还是使用explode或str_split
str_split	X	指定长度剖分字符串，默认单个字符剖分成数组
explode	X	可以指定单个或多个字符剖分字符串，成功则返回数组，例如12345按照34剖分则返回12和5
preg_quote	-	转义正则表达式字符，意思就是为特殊字符加上反斜线，正则表达式的特殊字符包括：. + * ? [ ^ ] $ ( ) { } = ! < > | : -

Additional explanation:

1. There are two sets of regular expression function libraries in PHP with very similar functions:

One set is provided by the POSIX (Portable Operating System Interface of Unix) library. The functions are named with the ereg_ prefix. The POSIX regular function library is no longer recommended for use .

One set is provided by the PCRE (Perl Compatible Regular Expression) library. The functions are named with the preg_ prefix. It is recommended that everyone use them first. In PCRE, the pattern expression (i.e. regular expression) is usually enclosed between two backslashes "/", such as "/^w+$/" style.

2. PHP regular expression function: match extraction, match replacement.

http://www.bkjia.com/PHPjc/445638.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445638.htmlTechArticleThis article will introduce to you the comparison of common string regular replacement and splitting functions in PHP. In PHP string regular replacement Probably: str_replace, str_ireplace, substr_replace, preg_replace, pr...