PHP substr_compare() Function
 Complete PHP String Reference
Definition and Usage
The substr_compare() function compares two strings from a specified start
position.
This function returns:
- 0 - if the two strings are equal
- <0 - if string1 (from startpos) is less than string2
- >0 - if string1 (from startpos) is greater than string2
If length is equal or greater than length of string1, this function returns
FALSE.
Syntax
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 |
| length |
Optional. Specifies how much of string1 to compare |
| case |
Optional. Specifies whether or not to perform a case-sensitive
compare.
Default is FALSE (case-sensitive) |
Tips and Notes
Tip: This function is binary safe and optionally case-sensitive.
Example 1
<?php
echo substr_compare("Hello world","Hello world",0);
?>
|
The output of the code above will be:
Example 2
<?php
echo substr_compare("Hello world","world",6);
?>
|
The output of the code above will be:
Example 3
<?php
echo substr_compare("Hello world","WORLD",6,TRUE);
?>
|
The output of the code above will be:
Complete PHP String Reference
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