what is the syntax of the UBSTR_COMPARE() function in php?
substr_compare(string1,string2,startpos,length,case)| Parameter | Description |
|---|---|
| string1 | Required. Specifies the first string to compare |
| string2 | Required. Specifies the second string to compare |
| startpos | Required. Specifies where to start comparing in string1. If negative, it starts counting from the end of the string |
| length | Optional. Specifies how much of string1 to compare |
| case | Optional. A boolean value that specifies whether or not to perform a case-sensitive compare:FALSE – Default. Case-sensitiveTRUE – Case-insensitive |
examples of the UBSTR_COMPARE() function
Example 1. In this example, we compare two strings.
<?php
echo substr_compare("Hello world","Hello world",0);
?>Example 2. In this example, we compare two strings, when start position in string1 for the comparison is 6th.
<?php
echo substr_compare("Hello world","world",6);
?>Example 3. In this example, we use all parameters.
<?php
echo substr_compare("world","or",1,2);
echo substr_compare("world","ld",-2,2);
echo substr_compare("world","orl",1,2);
echo substr_compare("world","OR",1,2,TRUE);
echo substr_compare("world","or",1,3);
echo substr_compare("world","rl",1,2);
?>Example 4. In this example, we different return values.
<?php
echo substr_compare("Hello world!","Hello world!",0); // the two strings are equal
echo substr_compare("Hello world!","Hello",0); // string1 is greater than string2
echo substr_compare("Hello world!","Hello world! Hello!",0); // str1 is less than str2
?>
