Regex detect a sub-string from a string, and replace with white space

Need to detect all the instances of a sub-string of the form “Índice - n -” from a string and replace them with a white space.

Also, “n” can be any positive number and there can be 1 or more spaces before and after the string, and in between words.

I think I can use this function:

$myString = preg_replace( '/sÍndices+/', ' ', $myString );

But I am stuck in the regex expression.

For example:

“This is a sentence Índice - 8 - forever” would become “This is a sentence forever“

“Just do it. Índice - 3 -” would become “Just do it. “

Please help.

Answer

You could use this regex:

Code:

$arr = [
    "This is a sentence Índice - 8 -    forever",
    "Just do it. Índice - 3 -",
];
foreach ($arr as $str) {
    echo preg_replace('/h*Índice - d+ -h*/', ' ', $str), "n";
}

Output:

This is a sentence forever
Just do it.

Demo & explanation

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Answer