Replacing the first character of a string with another string

Question

I'm trying to replace the first character of a string with words, but I'm running into some trouble here. I'm only able to replace the character with the first character of the string, and not the entire string. How would I fix this?

$type = "xgo xgo xgo";
$ifX = $type[0];

if ($ifX == "x") {
$type[0] = "do not ";
}

Result:

dgo xgo xgo

Want Result:

do not go xgo xgo

Niranjan N Raju · Accepted Answer · 2015-10-17 02:35:21Z

1

Try this,

$type = "xgo xgo xgo";
echo preg_replace('/x/', 'do not ', $type, 1); // output : do not go xgo xgo

If you dont specity 4th parameter, your output looks like this

do not go do not go do not go// all x are replaced.

edited Oct 17, 2015 at 2:35

answered Oct 17, 2015 at 2:30

Niranjan N Raju

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4 Comments

jessica Over a year ago

what's the fourth parameter do?

Niranjan N Raju Over a year ago

Its the count. If i dont specify, it will replace x to do not in the whole string. Or we can tell that how many times we want to replace X in string.

jessica Over a year ago

Well that saves making another method called preg_replace_all ;)

Niranjan N Raju Over a year ago

Getting expected result??

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