php preg_match正则表达式函数实例,phppregmatch函数
php preg_match正则表达式函数实例,phppregmatch函数
正则表达式几乎在所有编程语言里面都会用到,本实例介绍php中正则表达式preg_match函数的应用。
preg_match() 函数用于进行正则表达式匹配,成功返回 1 ,否则返回 0 。
preg_match() 匹配成功一次后就会停止匹配,如果要实现全部结果的匹配,则需使用 preg_match_all() 函数。
语法:
preg_match (pattern , subject, matches) |
参数 | 描述 |
pattern | 正则表达式 |
subject | 需要匹配检索的对象 |
matches | 可选,存储匹配结果的数组 |
实例:
此实例匹配大写字母后面带有.和空格的字符串,只能匹配到J. ,因为preg_match() 匹配成功一次后就会停止匹配,后面不会再匹配了。
<?<span>php </span><span>$str</span>="Daniel J. Gross Catholic High School A. is a faith and family based community committed to developing Christian leaders through educational excellence in the Marianist tradition."<span>; </span><span>if</span>(<span>preg_match</span>("/[A-Z]. /",<span>$str</span>,<span>$matches</span><span>)){ </span><span>print_r</span>(<span>$matches</span><span>); } </span>?>
输出结果:
<span>Array</span> ( [0] => J. )
原文地址:http://www.manongjc.com/article/52.html
相关阅读:
php正则表达式函数使用实例
php preg_match函数和php preg_match_al函数l实例,方法,例子
php preg_match_all()函数使用实例
php preg_match正则表达式函数实例

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