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PHP验证字符串中是否包含指定字符串
TANKING的代码日志
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1.strpos

strpos函数返回boolean值。FALSE和TRUE不用多说.用 “===”进行判断。strpos在执行速度上都比以上两个函数快,另外strpos有一个参数指定判断的位置,但是默认为空。意思是判断整个字符串。缺点是对中文的支持不好。

  1. if(strpos('www.php.cn','php') !== false){
  2. echo '包含php';
  3. }else{
  4. echo '不包含php';
  5. }

2.explode

用explode进行判断PHP判断字符串的包含。

  1. function check($str){
  2. // 判断是否包含a这个字符
  3. $needle ='a';
  4. $tmparray = explode($needle,$str);
  5. if(count($tmparray)>1){
  6. // 如果包含就返回true
  7. return true;
  8. } else{
  9. return false;
  10. }
  11. }
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