Storing a PHP loop as a string in a variable

Question

I have a problem storing a PHP loop in a variable.

The loop is like this:

for( $i = 1; $i <= 10; $i++ ) {

    echo $i . ' - ';

}

for this it's OK for an echo or print as it will produce:

1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 -

now I want to store the whole loop in a variable like $my_var which means:

echo $my_var;

which will produce:

1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 -

the whole idea is that I want to make the loop, store it as a string in a variable $my_var, than use it later in my script.

Doesn't $my_var .= $i.'-' in the loop code work?

mhitza
– mhitza

2010-10-08 02:07:25 +00:00
Commented Oct 8, 2010 at 2:07 — mhitza
– mhitza, Commented Oct 8, 2010 at 2:07

alex · Accepted Answer · 2013-05-19 20:48:00Z

13

Simply append the new string to the old one.

$str = '';

for( $i = 1; $i <= 10; $i++ ) {
    $str .= $i . ' - ';    
}

echo $str;

Alternatively, you could do...

$str = implode(range(1, 10), ' - ') . ' - ';

...or even...

$str = implode(array_merge(range(1, 10), array(' ')), ' - ');

edited May 19, 2013 at 20:48

answered Oct 8, 2010 at 2:06

alex

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4 Comments

alex Over a year ago

@med Welcome to programming :)

medk Over a year ago

I have 4 years of php development and always wandered about the .= and it came the time that I finally understood it. so it is used to append! thanks a lot!

BoltClock Over a year ago

+1 Are your alternative solutions examples of functional programming?

George Cummins Over a year ago

@medk: You said: "Thanks a lot! That's exactly what I need." A good follow-up to that sentence would be a click on the "Accepted" check.

neophyte · Accepted Answer · 2017-08-18 02:54:20Z

0

$my_var = '';
for( $i = 1; $i <= 10; $i++ ) {

    $my_var .= $i' - ';

}
echo $my_var;

Hope it will work

edited Aug 18, 2017 at 2:54

neophyte

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answered Feb 2, 2017 at 16:47

Mehedi

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