substr_compare Binary safe comparison of two strings from an offset, up to length characters &reftitle.description; intsubstr_compare stringmain_str stringstr intoffset intlength boolcase_insensitivityfalse substr_compare compares main_str from position offset with str up to length characters. &reftitle.parameters; main_str The main string being compared. str The secondary string being compared. offset The start position for the comparison. If negative, it starts counting from the end of the string. length The length of the comparison. The default value is the largest of the length of the str compared to the length of main_str less the offset. case_insensitivity If case_insensitivity is &true;, comparison is case insensitive. &reftitle.returnvalues; Returns < 0 if main_str from position offset is less than str, > 0 if it is greater than str, and 0 if they are equal. If offset is equal to or greater than the length of main_str or length is set and is less than 1, substr_compare prints a warning and returns &false;. &reftitle.changelog; &Version; &Description; 5.1.0 Added the possibility to use a negative offset. &reftitle.examples; ]]>