PHP - How to find numbers and bold that numbers in a string

Question

How I can make all the numbers in a string bold?

For example: $st_nu = "Today123" would become Today<b>123</b>.

Bold where? Web page? Console? Report file? Excel spreadsheet? — John3136, Aug 15 '13 at 01:38
I already used $str_replace = str_replace(range(0,9),"".range(0,9)."", $st_nu); But its not working. Please help. — Ronnie, Aug 15 '13 at 01:46

score 4 · Accepted Answer · answered Aug 15 '13 at 02:01

4

You can use a regular expression to bolden only numbers.

preg_replace('/(\d+)/', '<b>$1</b>', $st_nu);

What this does is matches any number 1 or more characters long, then surrounds it with the <b> tag (bold).

Using your example, you'd get back the following:

Today123

answered Aug 15 '13 at 02:01

Chris Forrence

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Hi bro, if I want to make the word Today also to bold ,then what I have to do? – Ronnie Aug 15 '13 at 02:32
You'd have to add Today as an option in your regular expression: `preg_replace('/(\d+|(Today)+)/', '$1', $st_nu);` – Chris Forrence Aug 15 '13 at 02:37

score 1 · Answer 2 · edited May 23 '17 at 12:24

1

See this answer to remove the numbers from the string. Then, if you want to output it to HTML, you can wrap it in a <b> tag, or preferably use CSS to style it.

So you can do

preg_match_all('!\d+!', $st_nu, $matches);

Edit: I misunderstood your question a little. Here's a way to do it. If you have more than one number, you can loop through the matches array.

foreach ($matches as $res) {
    $replaceStr = "<b>" . $res . "</b>";
    str_replace($res, $replaceStr, $st_nu);
}

edited May 23 '17 at 12:24

Community

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answered Aug 15 '13 at 01:50

Erik Godard

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But I have a string like $srctitle = "Environment and Pollution , Volume 1, Issue 1, pages 536-555"; so it should display the numbers in that string in bold, using your example its showing array. – Ronnie Aug 15 '13 at 02:06

PHP - How to find numbers and bold that numbers in a string

2 Answers2