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php_scripts/explore_sql_query.php at master · matks/php_scripts · GitHub
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explore_sql_query.php
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<?php
/**
* @param $length
*
* @return string
*/
function
buildSpaceString
(
$
length
)
{
$
string
=
''
;
for
(
$
i
=
0
;
$
i
<
$
length
;
$
i
++) {
$
string
.=
'
'
;
}
return
$
string
;
}
/**
* Echo array of strings in output
*
* @param array $elements
* @param int $tabLength
*/
function
echoArrayAsString
(
array
$
elements
,
$
tabLength
)
{
$
tab
=
buildSpaceString
(
$
tabLength
+
1
);
$
elementsAsString
=
implode
(
'
'
,
$
elements
);
$
commaSeparatedStrings
=
explode
(
'
,
'
,
$
elementsAsString
);
$
length
=
count
(
$
commaSeparatedStrings
);
if
(
$
length
===
1
) {
echo
'
'
.
$
commaSeparatedStrings
[
0
] .
PHP_EOL
;
return
;
}
for
(
$
i
=
0
;
$
i
<
$
length
;
$
i
++) {
if
(
$
i
===
0
) {
echo
'
'
.
$
commaSeparatedStrings
[
$
i
] .
'
,
'
.
PHP_EOL
;
}
else
if
(
$
i
=== (
$
length
-
1
)) {
echo
$
tab
.
$
commaSeparatedStrings
[
$
i
] .
PHP_EOL
;
}
else
{
echo
$
tab
.
$
commaSeparatedStrings
[
$
i
] .
'
,
'
.
PHP_EOL
;
}
}
}
/**
* @param string $word
*
* @return bool
*/
function
isSpecificSingleKeyWord
(
$
word
)
{
$
keyWords
=
array
(
'
SELECT
'
,
'
FROM
'
,
'
JOIN
'
,
'
WHERE
'
,
'
AND
'
,
'
OR
'
,
'
HAVING
'
,
'
LIKE
'
,
);
if
(
in_array
(
$
word
,
$
keyWords
)) {
return
true
;
}
else
{
return
false
;
}
}
/**
* @param string $word
*
* @return bool
*/
function
isSpecificDoubleKeyWord
(
$
word
)
{
$
keyWords
=
array
(
'
INNER JOIN
'
,
'
LEFT JOIN
'
,
'
RIGHT JOIN
'
,
'
ORDER BY
'
,
'
GROUP BY
'
,
);
if
(
in_array
(
$
word
,
$
keyWords
)) {
return
true
;
}
else
{
return
false
;
}
}
/**
* Attempt to gather words in 'SQL parts' (for ex. all SELECT all together)
*
* @param array $words
*
* @return array
*/
function
sortWordsInParts
(
array
$
words
)
{
// variables init
$
parts
=
array
();
$
keyWord
=
''
;
$
part
=
array
();
$
length
=
count
(
$
words
);
for
(
$
i
=
0
;
$
i
<
$
length
;
$
i
++) {
$
currentWord
=
$
words
[
$
i
];
if
(
$
i
== (
$
length
-
1
)) {
$
nextWord
=
''
;
}
else
{
$
nextWord
=
$
words
[
$
i
+
1
];
}
$
doubleWord
=
$
currentWord
.
'
'
.
$
nextWord
;
if
(
isSpecificSingleKeyWord
(
$
currentWord
)) {
// found key word: gather all previous words in a part
$
parts
[] = [
$
keyWord
,
$
part
];
$
keyWord
=
$
currentWord
;
$
part
=
array
();
}
else
if
(
isSpecificDoubleKeyWord
(
$
doubleWord
)) {
// found key double word: gather all previous words in a part
$
parts
[] = [
$
keyWord
,
$
part
];
$
keyWord
=
$
doubleWord
;
$
part
=
array
();
// skip next word as it is part of the double word
$
i
++;
}
else
{
// keep adding words in the current part
$
part
[] =
$
currentWord
;
}
}
$
parts
[] = [
$
keyWord
,
$
part
];
return
$
parts
;
}
/**
* Validate console input
*
* Die if input is not valid
*
* @param array $argv user inputs
*/
function
validateInput
(
$
argv
)
{
$
isValid
=
false
;
if
(
count
(
$
argv
) ===
2
) {
$
isValid
=
true
;
}
if
(!
$
isValid
) {
echo
'
php explore_sql_query <query>
'
.
PHP_EOL
;
die
(
1
);
}
}
validateInput
(
$
argv
);
require
'
Util/TextColorWriter.php
'
;
$
query
=
$
argv
[
1
];
$
query
=
str_replace
(
array
(
"\r\n"
,
"\r"
,
"\n"
),
"
"
,
$
query
);
$
words
=
explode
(
'
'
,
$
query
);
$
queryParts
=
sortWordsInParts
(
$
words
);
echo
TextColorWriter::
textColor
(
'
QUERY ANALYSIS:
'
, TextColorWriter::
BASH_PROMPT_GREEN
) .
PHP_EOL
;
foreach
(
$
queryParts
as
$
part
) {
$
key
=
$
part
[
0
];
$
content
=
$
part
[
1
];
$
tabLength
=
strlen
(
$
key
) +
1
;
if
(
in_array
(
$
key
,
array
(
'
AND
'
,
'
OR
'
))) {
// additionnal space
echo
'
'
;
}
echo
'
'
. TextColorWriter::
textColor
(
$
key
, TextColorWriter::
BASH_PROMPT_YELLOW
) .
'
'
;
echoArrayAsString
(
$
content
,
$
tabLength
);
}
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