PHP Taskbook Level 9.1
Given a text with punctuation marks, get an array of sentences of this text.
Add target="_blank" to all links leading to someone else's site.
Given a string:
$str = 'abcde abcde'
The variable stores the following symbols:
$del = 'abe';
Remove all the characters specified in the variable from the string. In our case, we should get the following:
'cd cd'
Given an arbitrary two-dimensional array:
[
[11, 12, 13, 14, 15],
[21, 22, 23, 24, 25],
[31, 32, 33, 34, 35],
[41, 42, 43, 44, 45],
[51, 52, 53, 54, 55],
]
Get the array of elements of its main diagonal:
[
11, 22, 33, 44, 55
]
