About comparison content of php strings

This article mainly introduces the comparison of PHP strings, which has certain reference value. Now I share it with everyone. Friends in need can refer to it

int strcmp( string $str1 , string $str2 )

Pay attention to the comparisonDifferentiate sizeWrite.

Parameters

str1The first string.

str2The second string.

Return value

If str1 is less than str2, return a negative number; if str1 is greater than str2 , returns a positive number; if they are equal, 0 is returned. (Returns 0 if equal)

Example:

<?php
        $var1="Hello";
        $var2="Hello";
          
         if(strcmp($var1,$var2)==0)
         {echo&#39;相等&#39;;
         }
        else     {
                echo&#39;不相等&#39;;
        }
  
 
?>

strcasecmp —Binary safe comparison of strings (case insensitive)

int strcasecmp(string$str1,string$str2)

• Return value: If str1 is less than str2, return d080f09270cf355b72114226f9621e90 0; if they are equal, return 0. str1

• The first string.

• str2

• The second string.

Example:

<?php
　　$var1="Hello";
　　$var2="hello";
　　if(strcasecmp($var1,$var2)==0){
　　echo&#39;$var1isequalto$var2inacase-insensitivestringcomparison&#39;;
　　}
　　?>

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