예제 #1
0
 public function testSubstring()
 {
     $this->eq(s::substring('abcdef', 2, 3), 'cde');
     $this->eq(s::substring('abcdef', 2), 'cdef');
     $this->eq(s::substring('abcdef', 2, 1000), 'cdef');
     $this->eq(s::substring('abcdef', 1000), '');
     $this->eq(s::substring('abcdef', 1000, 3), '');
     $this->eq(s::substring('abcdef', 2, 0), '');
     $this->eq(s::substring('abcdef', -2), 'ef');
     $this->eq(s::substring('abcdef', -4, 2), 'cd');
     $this->eq(s::substring('abcdef', -1000), 'abcdef');
     $this->eq(s::substring('abcdef', -7, 3), 'ab');
     $this->eq(s::substring('', 2, 4), '');
 }
예제 #2
0
 public function substring($offset, $length = null)
 {
     return new self(s::substring($this->value, $offset, $length));
 }